Integrated “omics” approaches to sustain global productivity of major grain legumes under heat stress

Abstract

Grain legumes serve as key sources of dietary protein to the global human population. Consequence of high-temperature (HT) stress is increasingly evident as drastically lost production of different crops including grain legumes worldwide, thus putting the global food security under great threat. In a changing climate scenario, cool season-adapted grain legumes frequently encounter heat stress (HS) during their reproductive phase, thus witnessing serious yield losses. To combat the emerging challenges of HT stress, an integrated approach demanding collaborative efforts from various disciplines of plant science should be in place. This review summarizes major impacts of HT stress on grain legume, and captures the relevance of crop genetic resources to HS tolerance in these crops. Measurement of physiological traits assumes key place in view of ever-increasing precision of next-generation phenotyping assays. We also discuss the significance of genetic inheritance and QTL discovery and evolving "omics" science for developing HS tolerance grain legume crops.

Genetic Variability and Association of Various Heat Stress Relevantindices for Selecting Heat Tolerant Chickpea (Cicer arietinum L.) Genotype

“…Gavuzzi, P., Rizza, F., Palumbo, M., Campaline, R.G., Ricciardi, G.L., Borghi, B., 1997. Evaluation of field and laboratory predictors of drought and heat tolerance in winter Jha et al, 2017…”

“…Add to this, recent global climate change has brought serious challenge to crop productivity including chickpea (Krishnamurthy et al, 2011). Most importantly, increasing evidences of heat stress (HS) is receiving serious attention and, is going to be an emerging threat to the cool season grown global food crops including chickpea (Jha et al, 2014b(Jha et al, , 2017(Jha et al, , 2018. In the context, consequences of increasing HS have significantly impacted upon chickpea growth in tropical and subtropical regions including Northern part of India, causing serious concern for chickpea yield (Jha et al, 2017;Krishnamurthy et al, 2011).…”

“…Most importantly, increasing evidences of heat stress (HS) is receiving serious attention and, is going to be an emerging threat to the cool season grown global food crops including chickpea (Jha et al, 2014b(Jha et al, , 2017(Jha et al, , 2018. In the context, consequences of increasing HS have significantly impacted upon chickpea growth in tropical and subtropical regions including Northern part of India, causing serious concern for chickpea yield (Jha et al, 2017;Krishnamurthy et al, 2011). In Indian condition, since last decade consequences of increase in environment temperature during the reproductive phase witnessed significant constraints in reproductive development processes resulting in significant yield loss in chickpea (Gowda et al, 2009).…”

QTL mapping for heat stress tolerance in chickpea (Cicer arietinum L.)

“…However, its productivity is severely affected by various biotic and abiotic stresses (Jha et al 2014). Under the increasingly severe climatic events, HS is receiving a serious concern for cold season grain legumes including chickpea, limiting their potential yield (Jha et al 2017). Significant phenological changes and detrimental impacts on pre-and post reproductive processes leading to reduction in yield have been recorded in chickpea under terminal HS (Devasirvatham et al 2012;Jha et al 2017).…”

“…Under the increasingly severe climatic events, HS is receiving a serious concern for cold season grain legumes including chickpea, limiting their potential yield (Jha et al 2017). Significant phenological changes and detrimental impacts on pre-and post reproductive processes leading to reduction in yield have been recorded in chickpea under terminal HS (Devasirvatham et al 2012;Jha et al 2017). Chickpea is highly sensitive to high temperature stress (> 35°C) during reproductive stage causing significant yield reduction due to malfunctioning of various reproductive events (Devasirvatham et al 2012).…”