Main conclusion

Pigeonpea has potential to foster sustainable agriculture and resilience in evolving climate change; understanding bio-physiological and molecular mechanisms of heat and drought stress tolerance is imperative to developing resilience cultivars.

Abstract

Pigeonpea is an important legume crop that has potential resilience in the face of evolving climate scenarios. However, compared to other legumes, there has been limited research on abiotic stress tolerance in pigeonpea, particularly towards drought stress (DS) and heat stress (HS). To address this gap, this review delves into the genetic, physiological, and molecular mechanisms that govern pigeonpea’s response to DS and HS. It emphasizes the need to understand how this crop combats these stresses and exhibits different types of tolerance and adaptation mechanisms through component traits. The current article provides a comprehensive overview of the complex interplay of factors contributing to the resilience of pigeonpea under adverse environmental conditions. Furthermore, the review synthesizes information on major breeding techniques, encompassing both conventional methods and modern molecular omics-assisted tools and techniques. It highlights the potential of genomics and phenomics tools and their pivotal role in enhancing adaptability and resilience in pigeonpea. Despite the progress made in genomics, phenomics and big data analytics, the complexity of drought and heat tolerance in pigeonpea necessitate continuous exploration at multi-omic levels. High-throughput phenotyping (HTP) is crucial for gaining insights into perplexed interactions among genotype, environment, and management practices (GxExM). Thus, integration of advanced technologies in breeding programs is critical for developing pigeonpea varieties that can withstand the challenges posed by climate change. This review is expected to serve as a valuable resource for researchers, providing a deeper understanding of the mechanisms underlying abiotic stress tolerance in pigeonpea and offering insights into modern breeding strategies that can contribute to the development of resilient varieties suited for changing environmental conditions.

中文翻译：

---

干旱和热应激：深入了解木豆改良的耐受机制和育种策略

主要结论

木豆具有促进可持续农业和应对不断变化的气候变化的能力的潜力；了解耐热和干旱胁迫耐受性的生物生理和分子机制对于开发抗逆力品种至关重要。

抽象的

木豆是一种重要的豆类作物，在面对不断变化的气候情况时具有潜在的恢复能力。然而，与其他豆科植物相比，木豆的非生物胁迫耐受性研究有限，特别是对干旱胁迫（DS）和热胁迫（HS）的研究。为了解决这一差距，本综述深入研究了控制木豆对 DS 和 HS 反应的遗传、生理和分子机制。它强调需要了解这种作物如何对抗这些压力，并通过组成性状表现出不同类型的耐受性和适应机制。本文全面概述了影响木豆在不利环境条件下恢复能力的因素的复杂相互作用。此外，该综述综合了主要育种技术的信息，包括传统方法和现代分子组学辅助工具和技术。它强调了基因组学和表型组学工具的潜力及其在增强木豆适应性和恢复力方面的关键作用。尽管在基因组学、表型组学和大数据分析方面取得了进展，但木豆的干旱和耐热性的复杂性需要在多组学水平上不断探索。高通量表型分析 (HTP) 对于深入了解基因型、环境和管理实践 (GxExM) 之间复杂的相互作用至关重要。因此，将先进技术融入育种计划对于开发能够抵御气候变化挑战的木豆品种至关重要。这篇综述预计将为研究人员提供宝贵的资源，让人们更深入地了解木豆非生物胁迫耐受性的机制，并为现代育种策略提供见解，从而有助于开发适合不断变化的环境条件的抗逆品种。