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Foreword XIX
Preface XXI
List of Contributors XXV
PART I Climate Change and Abiotic Stress Factors 1
1 Climate Change and Food Security 3
R.B. Singh
1.1 Background and Introduction 3
1.2 State of Food Security 6
1.3 Climate Change Impact and Vulnerability 9
1.4 Natural Resources Management 13
1.5 Adaptation and Mitigation 17
1.6 Climate Resilient Agriculture – The Way Forward 18
References 22
2 Improving Crop Productivity under Changing Environment 23
Navjot K. Dhillon, Satbir S. Gosal, and Manjit S. Kang
2.1 Introduction 23
2.1.1 Global Environmental Change Alters Crop Targets 28
2.1.2 Crop Productivity 28
2.1.3 Climatic Factors Affecting Crop Production 29
2.1.3.1 Precipitation 29
2.1.3.2 Temperature 29
2.1.3.3 Atmospheric Humidity 30
2.1.3.4 Solar Radiation 30
2.1.3.5 Wind Velocity 30
2.1.4 Plant Genetic Engineering 31
2.1.4.1 Engineering for Herbicide Resistance 32
2.1.4.2 Engineering for Insect Resistance 32
2.1.4.3 Engineering for Disease Resistance 33
2.1.4.4 Engineering for Improving Nutritional Quality 36
2.1.4.5 Engineering for Male Sterility 36
2.1.4.6 Engineering for Molecular Farming/Pharming 37
2.1.4.7 Engineering for Improving Postharvest Traits 37
2.1.4.8 Engineering for Abiotic Stress Tolerance 38
2.1.5 Molecular Breeding 39
2.2 Conclusions 40
References 40
3 Genetic Engineering for Acid Soil Tolerance in Plants 49
Sagarika Mishra, Lingaraj Sahoo, and Sanjib K. Panda
3.1 Introduction 49
3.2 Phytotoxic Effect of Aluminum on Plant System 50
3.2.1 Al-Induced Morphophysiological Changes in Roots 50
3.2.2 Negative Influence of Al on Cytoskeletal Network of Plant Cells 51
3.2.3 Interaction of Al3þ Ions with Cell Wall and Plasma Membrane 52
3.2.4 Oxidative Stress Response upon Al Stress 52
3.3 Aluminum Tolerance Mechanisms in Plants 53
3.3.1 Preventing the Entry of Al into Plant Cell 53
3.3.2 Role of Organic Acids in External and Internal Detoxification of Al 54
3.4 Aluminum Signal Transduction in Plants 55
3.5 Genetic Approach for Development of Al-Tolerant Plants 56
3.6 Transcriptomics and Proteomics as Tools for Unraveling Al Responsive Genes 59
3.7 Future Perspectives 60
References 61
4 Evaluation of Tropospheric O3 Effects on Global Agriculture: A New Insight 69
Richa Rai, Abhijit Sarkar, S.B. Agrawal, and Madhoolika Agrawal
4.1 Introduction 69
4.2 Tropospheric O3 Formation and Its Recent Trend 71
4.2.1 Projected Trends of Ozone Concentrations 74
4.3 Mechanism of O3 Uptake 75
4.3.1 Mode of Action 76
4.3.2 O3 Sensing and Signal Transduction 76
4.3.3 ROS Detoxification Mechanisms: From Apoplast to Symplast 77
4.3.4 Physiological Responses 80
4.3.4.1 Photosynthesis 80
4.3.5 Cultivar Sensitivity in Relation to Growth and Yield 84
4.4 Looking Through the “-Omics” at Post-Genomics Era 87
4.4.1 Evolution of Multi-Parallel “-Omics” Approaches in Modern Biology 87
4.4.2 “-Omics” Response in Ozone-Affected Crop Plants: An In Vivo Assessment 87
4.4.2.1 Case Studies in Major Crop Plants 88
4.5 Different Approaches to Assess Impacts of Ozone on Agricultural Crops 92
4.6 Tropospheric O3 and Its Interaction with Other Components of Global Climate Change and Abiotic Stresses 94
4.6.1 Elevated CO2 and O3 Interaction 94
4.6.2 O3 and Drought Interaction 95
4.6.3 O3 and UV-B Interaction 95
4.7 Conclusions 96
References 97
PART II Methods to Improve Crop Productivity 107
5 Mitogen-Activated Protein Kinases in Abiotic Stress Tolerance in Crop Plants: “-Omics” Approaches 109
Monika Jaggi, Meetu Gupta, Narendra Tuteja, and Alok Krishna Sinha
5.1 Introduction 109
5.2 MAPK Pathway and Its Components 112
5.2.1 MAP3Ks 112
5.2.2 MAP2Ks 114
5.2.3 MAPKs 114
5.3 Plant MAPK Signaling Cascade in Abiotic Stress 115
5.3.1 MAPK Cascades under Salt Stress 117
5.3.2 Drought Stress-Induced MAPKs 117
5.3.3 Temperature Stress Response and MAPK Cascades 119
5.3.4 Activation of MAPKs by Oxidative Stress 120
5.3.5 Ozone-Induced MAPKs 121
5.3.6 Wounding-Induced MAPKs 121
5.3.7 MAPKs in Heavy Metal Signaling 122
5.4 Crosstalk between Plant MAP Kinases in Abiotic Stress Signaling 122
5.5 “-Omics” Analyses of Plants under Abiotic Stress 123
5.6 Conclusions and Future Perspectives 127
Acknowledgments 128
References 128
6 Plant Growth Promoting Rhizobacteria-Mediated Amelioration of Abiotic and Biotic Stresses for Increasing Crop Productivity 133
Vasvi Chaudhry, Suchi Srivastava, Puneet Singh Chauhan, Poonam C. Singh, Aradhana Mishra, and Chandra Shekhar Nautiyal
6.1 Introduction 133
6.2 Factors Affecting Plant Growth 134
6.2.1 Biotic Stress 135
6.2.2 Abiotic Stress 135
6.3 Plant-Mediated Strategies to Elicit Stresses 136
6.3.1 Osmoadaptation 137
6.3.2 Antioxidative Enzyme Production 137
6.3.3 Effect of Stress on Plant Nutrient Uptake 137
6.4 Plant Growth Promoting Rhizobacteria-Mediated Beneficiaries to the Environment 138
6.4.1 PGPR as Abiotic Stress Ameliorating Agent 138
6.4.2 PGPR Action against Multiple Pathogens 139
6.4.3 Determinants of PGPR Colonization in Stressed Environment 140
6.4.4 PGPR-Mediated Induction of Defense Mechanism 143
6.4.5 Modulation of Plant Genes through Bacterial Intervention 144
6.5 PGPR-Based Practical Approaches to Stress Tolerance 145
6.5.1 Development and Commercialization of PGPRs: Approaches and Limitations 145
6.5.2 Implications of Bacterial Genes for Transgenic Development 146
6.6 Conclusions 147
References 147
7 Are Viruses Always Villains? The Roles Plant Viruses May Play in Improving Plant Responses to Stress 155
Stephen J. Wylie and Michael G.K. Jones
7.1 Introduction 155
7.2 Viruses Are Abundant and Diverse 156
7.3 Wild Versus Domesticated 156
7.4 New Encounters 157
7.5 Roles for Viruses in Adaptation and Evolution 158
7.6 Conclusions 160
References 160
8 Risk Assessment of Abiotic Stress Tolerant GM Crops 163
Paul Howles and Joe Smith
8.1 Introduction 163
8.2 Abiotic Stress 164
8.3 Abiotic Stress Traits are Mediated by Multiple Genes 165
8.4 Pleiotropy and Abiotic Stress Responses 167
8.5 General Concepts of Risk Analysis 168
8.6 Risk Assessment and Abiotic Stress Tolerance 169
8.6.1 Choice of Comparator 171
8.6.2 Production of an Allergenic or Toxic Substance 171
8.6.3 Invasiveness and Weediness 172
8.6.4 Pleiotropic Effects 173
8.6.5 Gene Transfer to Another Organism 175
8.7 Abiotic Stress Tolerance Engineered by Traditional Breeding and Mutagenesis 176
8.8 Conclusions 177
Acknowledgments 177
References 177
9 Biofertilizers: Potential for Crop Improvement under Stressed Conditions 183
Alok Adholeya and Manab Das
9.1 Introduction 183
9.2 What Is Biofertilizer? 184
9.3 How It Differs from Chemical and Organic Fertilizers 184
9.4 Type of Biofertilizers 184
9.5 Description and Function of Important Microorganisms Used as Biofertilizers 187
9.5.1 Rhizobia 187
9.5.2 Azotobacter and Azospirillum 187
9.5.3 Blue-Green Algae or Cyanobacteria 188
9.6 Phosphate Solubilizing Bacteria 189
9.7 Plant Growth Promoting Rhizobacteria 189
9.8 Mycorrhiza 189
9.9 Inoculation of Biofertilizers 190
9.9.1 Carrier Materials for Biofertilizers 190
9.10 Potential Role of Various Biofertilizers in Crop Production and Improvement 192
9.10.1 Bacterial Biofertilizers 192
9.10.2 Fungal Biofertilizers 194
9.11 Conclusions 195
References 195
PART III Species-Specific Case Studies 201
Section IIIA Graminoids 201
10 Rice: Genetic Engineering Approaches for Abiotic Stress Tolerance – Retrospects and Prospects 203
Salvinder Singh, M.K. Modi, Sarvajeet Singh Gill, and Narendra Tuteja
10.1 Introduction 204
10.2 Single Action Genes 204
10.2.1 Osmoprotectants 204
10.2.2 Late Embryogenesis Abundant Proteins 207
10.2.3 Detoxifying Genes 208
10.2.4 Multifunctional Genes for Lipid Biosynthesis 210
10.2.5 Heat Shock Protein Genes 211
10.2.6 Regulatory Genes 212
10.2.7 Transcription Factors 212
10.2.8 Other Transcription Factors 215
10.2.9 Signal Transduction Genes 216
10.2.10 Functional Proteins 217
10.2.11 ROS Scavenging System 217
10.2.12 Sodium Transporters 218
10.3 Choice of Promoters 220
10.4 Physiological Evaluation of Stress Effect 221
10.5 Means of Stress Impositions, Growth Conditions, and Evaluations 222
10.6 Adequate Protocols to Apply Drought and Salinity Stress 223
10.7 Conclusions 224
References 225
11 Rice: Genetic Engineering Approaches to Enhance Grain Iron Content 237
Salvinder Singh, D. Sudhakar, and M.K. Modi
11.1 Introduction 237
11.2 Micronutrient Malnutrition 237
11.2.1 Approaches to Decrease Micronutrient Deficiencies and/or Malnutrition 238
11.2.2 Importance of Iron in Human Physiology 239
11.2.3 Source of Iron for Human Nutrition 239
11.2.4 Approaches to Decrease Micronutrient Deficiencies 240
11.2.5 Pharmaceutical Preparation 241
11.2.6 Disease Reduction 241
11.3 Food Fortification 241
11.4 Biofortification 242
11.4.1 Biofortification through Classical Breeding Approach 243
11.4.2 Biofortification through Genetic Engineering Approach 244
11.4.3 Biofortification by Decreasing Antinutrient Contents 245
11.4.4 Biofortification by Increasing Iron Bioavailability Promoting Compounds 246
11.5 Iron Uptake and Transport in Plants 247
11.5.1 The Reduction Strategy 247
11.5.2 The Chelation Strategy 248
11.5.3 Regulation of the Reduction Strategy 248
11.5.4 Iron Signaling and Sensing in Plants 249
11.5.5 Iron Transport within the Plant 249
11.5.5.1 Intercellular Iron Transport 249
11.5.5.2 Subcellular Iron Transport 250
11.5.5.3 Vacuoles 251
11.5.5.4 Chloroplasts 251
11.5.5.5 Mitochondria 252
11.6 Conclusions 252
References 253
12 Pearl Millet: Genetic Improvement in Tolerance to Abiotic Stresses 261
O.P. Yadav, K.N. Rai, and S.K. Gupta
12.1 Introduction 262
12.2 Drought: Its Nature and Effects 264
12.2.1 Seedling Phase 264
12.2.2 Vegetative Phase 264
12.2.3 Reproductive Phase 265
12.3 Genetic Improvement in Drought Tolerance 265
12.3.1 Conventional Breeding 266
12.3.1.1 Selection Environment 266
12.3.1.2 Selection Criteria 268
12.3.1.3 Yield Improvement 270
12.3.2 Molecular Breeding 273
12.4 Heat Tolerance 274
12.4.1 Tolerance at Seedling Stage 274
12.4.2 Tolerance at Reproductive Stage 275
12.5 Salinity Tolerance 277
References 279
13 Bamboo: Application of Plant Tissue Culture Techniques for Genetic Improvement of Dendrocalamus strictus Nees 289
C.K. John and V.A. Parasharami
13.1 Introduction 289
13.2 Vegetative Propagation 290
13.3 Micropropagation 291
13.4 Genetic Improvement for Abiotic Stress Tolerance 291
13.5 Dendrocalamus strictus 292
13.6 Future Prospects 299
References 299
Section IIIB Leguminosae 303
14 Groundnut: Genetic Approaches to Enhance Adaptation of Groundnut (Arachis Hypogaea, L.) to Drought 305
R.C. Nageswara Rao, M.S. Sheshshayee, N. Nataraja Karaba, Rohini Sreevathsa, N. Rama, S. Kumaraswamy, T.G. Prasad, and M. Udayakumar
14.1 Introduction 306
14.1.1 Importance of Groundnut 306
14.1.2 Origin and Diversity 307
14.1.3 Area, Production, and Productivity 307
14.1.4 Major Abiotic Stresses 307
14.2 Response to Water Deficits at the Crop Level 309
14.2.1 Effects of Water Deficits on Yield 309
14.2.2 Effects of Multiple Water Deficits 309
14.2.3 Effects of Water Deficit at Different Stages of Crop Growth 311
14.2.3.1 Germination and Emergence 311
14.2.3.2 Vegetative Phase 312
14.2.3.3 Reproductive Phase 313
14.2.4 Effects of Water Deficits on Some Physiological Processes 313
14.2.4.1 Water Deficit and Temperature Interaction 314
14.2.4.2 Water Uptake and Plant–Water Relations 315
14.2.4.3 N Fixation 315
14.2.4.4 Photosynthesis and Transpiration 316
14.2.4.5 Partitioning of Dry Matter to Pods and Harvest Index 317
14.2.5 Effects of Water Deficit on Seed Quality 318
14.2.5.1 Protein 318
14.2.5.2 Oil Content and Quality 318
14.2.5.3 Aflatoxin 319
14.3 Some Physiological Mechanisms Contributing to Drought Tolerance in Groundnut 320
14.3.1 Water Extraction Efficiency 321
14.3.2 Transpiration Efficiency 321
14.3.3 Surrogate Measures of TE 322
14.3.4 Epicuticular Wax 324
14.3.5 Survival under and Recovery from Drought 324
14.3.6 Acquired Thermotolerance 325
14.4 Integration of Physiological Traits to Improve Drought Adaptation of Groundnut 326
14.5 Status of Genomic Resources in Groundnut 330
14.5.1 Marker Resources in Groundnut 330
14.5.2 Drought-Specific ESTs Libraries in Groundnut 331
14.6 Molecular Breeding and Genetic Linkage Maps in Groundnut 337
14.6.1 Genetic Linkage Maps for Groundnut 338
14.7 Transgenic Approach to Enhance Drought Tolerance 339
14.7.1 Transgenics: An Option to Pyramid Drought Adaptive Traits 340
14.8 Summary and Future Perspectives 343
14.8.1 Options and Approaches 344
14.8.2 Molecular Breeding a Potential Option for Genetic Improvement in Groundnut 344
14.8.3 Transgenics: A Potential Future Alternative Strategy 345
Acknowledgments 345
References 345
15 Chickpea: Crop Improvement under Changing Environment Conditions 361
B.K. Sarmah, S. Acharjee, and H.C. Sharma
15.1 Introduction 362
15.2 Abiotic Constraints to Chickpea Production 363
15.3 Modern Crop Breeding Approaches for Abiotic Stress Tolerance 364
15.3.1 Drought, Salinity, and Low Temperature 364
15.4 Genetic Engineering of Chickpea for Tolerance to Abiotic Stresses 365
15.4.1 Drought and Salinity 365
15.4.2 Elevated CO2 Concentrations 366
15.5 Biotic Constraints in Chickpea Production 366
15.5.1 Insect Pests 366
15.5.2 Diseases 368
15.5.3 Biological Nitrogen Fixation 369
15.6 Modern Molecular Breeding Approaches for Biotic Stress Tolerance 369
15.6.1 Pod Borers 369
15.6.2 Ascochyta and Fusarium 370
15.6.3 Wide Hybridization 371
15.7 Application of Gene Technology 372
15.7.1 Pod Borers 372
15.8 Conclusion 372
References 373
16 Grain Legumes: Biotechnological Interventions in Crop Improvement for Adverse Environments 381
Pooja Bhatnagar-Mathur, Paramita Palit, Ch Sridhar Kumar, D. Srinivas Reddy, and Kiran K. Sharma
16.1 Introduction 382
16.2 Grain Legumes: A Brief Introduction 382
16.3 Major Constraints for Grain Legume Production 383
16.3.1 Biotic Stresses 383
16.3.1.1 Fungal Diseases 384
16.3.1.2 Viral Diseases 385
16.3.1.3 Insect Pests 385
16.3.1.4 Parasitic Weeds 385
16.3.2 Abiotic Stresses: A Threat to Grain Legumes 386
16.3.2.1 Heat Stress 386
16.3.2.2 Salinity 386
16.4 Biotechnological Interventions in Grain Legume Improvement 387
16.4.1 Groundnut 387
16.4.1.1 Biotechnology for Tolerance to Abiotic Stresses 388
16.4.1.2 Biotechnology for Resistance to Biotic Stresses 389
16.4.2 Chickpea 391
16.4.2.1 Biotechnology for Tolerance to Abiotic Stresses 392
16.4.2.2 Biotechnology for Resistance to Biotic Stresses 394
16.4.3 Pigeonpea 395
16.4.3.1 Biotechnology for Tolerance to Abiotic Stresses 396
16.4.3.2 Biotechnology for Resistance to Biotic Stresses 397
16.4.4 Soybean 398
16.4.4.1 Biotechnology for Tolerance to Abiotic Stresses 398
16.4.4.2 Biotechnology for Resistance to Biotic Stresses 400
16.4.5 Cowpea 401
16.4.5.1 Biotechnology for Tolerance to Abiotic Stresses 402
16.4.5.2 Biotechnology for Resistance to Biotic Stresses 403
16.4.6 Common Beans 403
16.4.6.1 Biotechnology for Tolerance to Abiotic Stresses 403
16.4.6.2 Biotechnology for Resistance to Biotic Stresses 404
16.4.7 Lentils 405
16.4.7.1 Biotechnology for Tolerance to Abiotic Stresses 405
16.4.7.2 Biotechnology for Resistance to Biotic Stresses 406
16.5 Future Prospects 407
16.6 Integration of Technologies 407
16.7 Conclusion 408
References 409
17 Pulse Crops: Biotechnological Strategies to Enhance Abiotic Stress Tolerance 423
S. Ganeshan, P.M. Gaur, and R.N. Chibbar
17.1 Pulse Crops: Definition and Major and Minor Pulse Crops 423
17.2 Pulse Production: Global and Different Countries from FAOStat 424
17.3 Abiotic Stresses Affecting Pulse Crops 424
17.4 Mechanisms Underlying Stress Tolerance: A Generalized Picture 426
17.5 Strategies to Enhance Abiotic Stress Tolerance: Conventional 428
17.5.1 Breeding 428
17.5.2 Mining Germplasm Resources 430
17.5.3 Variation Creation: Traditional Mutagenesis and TILLING 430
17.6 Strategies to Enhance Abiotic Stress Tolerance: Biotechnology and Genomics 432
17.6.1 Genetic Mapping and QTL Analysis 432
17.6.2 Transcriptomic Resources 434
17.6.3 Transgenic Approaches 435
17.6.4 In Vitro Regeneration and Transformation 436
17.7 Concluding Remarks 438
References 438
Section IIIC Rosaceae 449
18 Improving Crop Productivity and Abiotic Stress Tolerance in Cultivated Fragaria Using Omics and Systems Biology Approach 451
Jens Rohloff, Pankaj Barah, and Atle M. Bones
18.1 Introduction 451
18.2 Abiotic Factors and Agronomic Aspects 453
18.2.1 Botany and Agricultural History 453
18.2.1.1 Botany and Distribution 453
18.2.1.2 Nutritionals and Phytochemicals 454
18.2.1.3 Economic Aspects of Production and Environment 455
18.2.2 Abiotic Factors in Strawberry Production 458
18.2.2.1 Light 458
18.2.2.2 Temperature 459
18.2.2.3 Water 459
18.2.2.4 Soil 460
18.2.2.5 Atmospheric Gases and Airborne Contamination 460
18.2.2.6 Abiotic Stress Alleviation through Agricultural Practice 461
18.2.3 Fragaria Breeding toward Abiotic Factors 461
18.2.3.1 Cultivation and Berry Production 461
18.2.3.2 Fresh Market Quality and Consumer Demand 462
18.2.3.3 Postharvest and Food Chain 462
18.2.3.4 Processing and Industry 462
18.2.3.5 Classical Breeding of Varieties and Hybrids 463
18.2.3.6 Marker-Assisted Breeding (MAB) 463
18.3 Genetically Modified (GM) Plants 466
18.4 Omics Approaches toward Abiotic Stress in Fragaria 467
18.4.1 Genomic Approaches toward Fragaria 467
18.4.1.1 Case I: Genomic Approaches toward Cold Acclimation/Freezing Tolerance in Fragaria 468
18.4.2 Proteomic Approaches toward Fragaria 469
18.4.2.1 Case II: Proteomic Approaches toward Cold Acclimation/Freezing Tolerance in Fragaria 469
18.4.3 Metabolomic Approaches toward Fragaria 470
18.4.3.1 Case III: Metabolomic Approaches toward Cold Acclimation/Freezing Tolerance in Fragaria 471
18.5 Systems Biology as Suitable Tool for Crop Improvement 473
18.5.1 Omics Data Integration for Improving Plant Productivity/Translational Research 474
18.5.2 Plant/Crops Systems Biology 476
18.5.3 Pathway Modeling and the Concept of “Virtual Plant” 477
18.5.4 Network-Based Approaches 477
18.5.4.1 Correlation Studies Using Multivariate Data 478
18.5.4.2 Protein–Protein Interaction (PPI) Networks 478
18.5.4.3 Gene Regulatory Networks 478
18.5.4.4 Coexpression Networks 479
18.6 Conclusions and Future Prospects 479
18.6.1 Technology-Driven Innovations for Fragaria Breeding and Development 480
18.6.2 Biology-Related Issues for Improvements in the Fragaria Genus 480
Acknowledgments 480
References 480
19 Rose: Improvement for Crop Productivity 485
Madhu Sharma, Kiran Kaul, Navtej Kaur, Markandey Singh, Devendra Dhayani, and Paramvir Singh Ahuja
19.1 Introduction 485
19.2 Abiotic Stress and Rose Yield 487
19.2.1 Drought Stress 487
19.2.1.1 Ethylene Biosynthesis 490
19.2.2 Salt Stress 491
19.2.3 Light Stress 493
19.2.4 Low-Temperature Stress 494
19.2.5 High-Temperature Stress 494
19.3 Abiotic Stress and Reactive Oxygen Species 497
19.4 Stress-Related Genes Associated with Abiotic Stress Tolerance in Rose and Attempts to Transgenic Development 497
19.5 Conclusions 499
Acknowledgments 500
References 500
Index 507
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