An integrated approach to maintaining cereal productivity under climate change

Reynolds, M.P.; Quilligan, E.; Aggarwal, Pramod K.; Bansal, Kailash C.; Cavalieri, Anthony J.; Chapman, Scott C.; Chapotin, Saharah Moon; Datta, Swapan K.; Duveiller, E.; Gill, Kulvinder S.; Jagadish, Krishna S.V.; Joshi, Arun Kumar; Koehler, Ann‐Kristin; Kosina, Petr; Krishnan, Srivalli; Lafitte, R.; Mahala, R S; Raveendran, M.; Paterson, Andrew H.; Prasanna, Boddupalli M.; Rakshit, Sujay; Rosegrant, Mark W.; Sharma, Indu; Singh, Ravi P.; Sivasankar, S.; Vadez, Vincent; Valluru, Ravi; Prasad, P. V. Vara; Yadav, Om Prakash

doi:10.1016/j.gfs.2016.02.002

Cited by 131 publications

(96 citation statements)

References 65 publications

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“…Under these conditions, yields of staple cereal crops (e.g. bread wheat [Triticum aestivum], rice [Oryza sativa], and maize [Zea mays]), which provide over 50% of human calories, are predicted to decrease (Reynolds et al, 2016). Thus, elucidating the mechanisms underlying plant-resilience to suboptimal field conditions and developing stress-tolerant crops is the most promising strategy to ensure global food security.…”

mentioning

confidence: 99%

Unique Physiological and Transcriptional Shifts under Combinations of Salinity, Drought, and Heat

Shaar-Moshe

Blumwald²,

Peleg³

2017

Plant Physiol.

112

101

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Climate-change-driven stresses such as extreme temperatures, water deficit, and ion imbalance are projected to exacerbate and jeopardize global food security. Under field conditions, these stresses usually occur simultaneously and cause damages that exceed single stresses. Here, we investigated the transcriptional patterns and morpho-physiological acclimations of Brachypodium dystachion to single salinity, drought, and heat stresses, as well as their double and triple stress combinations. Hierarchical clustering analysis of morpho-physiological acclimations showed that several traits exhibited a gradually aggravating effect as plants were exposed to combined stresses. On the other hand, other morphological traits were dominated by salinity, while some physiological traits were shaped by heat stress. Response patterns of differentially expressed genes, under single and combined stresses (i.e. common stress genes), were maintained only among 37% of the genes, indicating a limited expression consistency among partially overlapping stresses. A comparison between common stress genes and genes that were uniquely expressed only under combined stresses (i.e. combination unique genes) revealed a significant shift from increased intensity to antagonistic responses, respectively. The different transcriptional signatures imply an alteration in the mode of action under combined stresses and limited ability to predict plant responses as different stresses are combined. Coexpression analysis coupled with enrichment analysis revealed that each gene subset was enriched with different biological processes. Common stress genes were enriched with known stress response pathways, while combination unique-genes were enriched with unique processes and genes with unknown functions that hold the potential to improve stress tolerance and enhance cereal productivity under suboptimal field conditions.

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mentioning

confidence: 99%

Unique Physiological and Transcriptional Shifts under Combinations of Salinity, Drought, and Heat

Shaar-Moshe

Blumwald²,

Peleg³

2017

Plant Physiol.

112

101

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“…We have developed and evaluated a field phenotyping system, and applied it to wheat, a key staple crop [12], and its response to nitrogen deficiency, a major issue for sustainable agriculture [17,19]. We have shown that these technologies can contribute to development of our knowledge base on the crop functions that influence yield and its response to nitrogen, and could help in identifying important genes involved, and contribute to evaluating new wheat genotypes developed for improved photosynthesis [53][54][55].…”

Section: Discussionmentioning

confidence: 99%

“…The previous phase of massive worldwide yield increases, the so-called "Green Revolution", was underpinned by the joint improvement of crop varieties, through breeding, and of crop management, through intensified agronomy and input use [9,10]. In the current situation, plant breeding will again be a key component to respond to the challenge of increased food production [11,12]. The pace of progress from plant breeding will need to be even quicker than was previously the case, to keep up with the pace of increasing demand [10,13], but also to counterbalance effects of climate change and increasing environmental costs of excess reliance on inputs.…”

Section: Introductionmentioning

confidence: 99%

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Applying remote sensing expertise to crop improvement: progress and challenges to scale up high throughput field phenotyping from research to industry

Gouache¹,

Beauchêne²,

Mini³

et al. 2016

SPIE Proceedings

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Digital and image analysis technologies in greenhouses have become commonplace in plant science research and started to move into the plant breeding industry. However, the core of plant breeding work takes place in fields. We will present successive technological developments that have allowed the migration and application of remote sensing approaches at large into the field of crop genetics and physiology research, with a number of projects that have taken place in France. These projects have allowed us to develop combined sensor plus vector systems, from tractor mounted and UAV (unmanned aerial vehicle) mounted spectroradiometry to autonomous vehicle mounted spectroradiometry, RGB (redgreen-blue) imagery and Lidar. We have tested these systems for deciphering the genetics of complex plant improvement targets such as the robustness to nitrogen and water deficiency of wheat and maize. Our results from wheat experiments indicate that these systems can be used both to screen genetic diversity for nitrogen stress tolerance and to decipher the genetics behind this diversity. We will present our view on the next critical steps in terms of technology and data analysis that will be required to reach cost effective implementation in industrial plant breeding programs. If this can be achieved, these technologies will largely contribute to resolving the equation of increasing food supply in the resource limited world that lies ahead.

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“…While the call for more collaborative work is continually made, a more determined approach is needed [10,[81][82][83]. Several studies from India are consistent with outputs from cropping system models [3] that project yield reductions of 10-40% by end of century unless adaption begins now, despite the beneficial effects of increased CO 2 [84][85][86][87].…”

Section: Cereal Productivitymentioning

confidence: 95%

Challenges and Responses to Ongoing and Projected Climate Change for Dryland Cereal Production Systems throughout the World

et al. 2018

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Abstract:Since the introduction of mechanized production in both developed and developing countries, crops and their management have undergone significant adaptation resulting in increased productivity. Historical yield increases in wheat have occurred across most regions of the world (20-88 kg ha −1 year −1 ), but climate trends threaten to dampen or reverse these gains such that yields are expected to decrease by 5-6% despite rising atmospheric CO 2 concentrations. Current and projected climatic factors are temporally and spatially variable in dryland cereal production systems throughout the world. Productivity gains in wheat in some locations have been achieved from traditional agronomic practices and breeding. Continued improvement in all cereal production regions and locations of the world requires technical advances, including closer monitoring of soils, water conservation strategies, and multiple sowing times using different crops to reduce risks. The management of disease, pests, and weeds will be an added challenge, especially in areas of higher precipitation. Excellent progress has been achieved in Asia and there is much potential in Sub-Saharan Africa. Technical solutions seem within our grasp but must be implemented in the context of variable social, economic, regulatory, and administrative constraints, providing opportunities for cross fertilization and global collaboration to meet them.

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An integrated approach to maintaining cereal productivity under climate change

Abstract: Journal articleIFPRI3; ISIEPTDP

Cited by 131 publications

References 65 publications

Unique Physiological and Transcriptional Shifts under Combinations of Salinity, Drought, and Heat

Unique Physiological and Transcriptional Shifts under Combinations of Salinity, Drought, and Heat

Applying remote sensing expertise to crop improvement: progress and challenges to scale up high throughput field phenotyping from research to industry

Challenges and Responses to Ongoing and Projected Climate Change for Dryland Cereal Production Systems throughout the World

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