Pandey Prachi, Irulappan Vadivelmurugan, Bagavathiannan Muthukumar V, Senthil-Kumar Muthappa
National Institute of Plant Genome ResearchNew Delhi, India.
Department of Soil and Crop Sciences, Texas A&M University, College StationTX, USA.
Front Plant Sci. 2017 Apr 18;8:537. doi: 10.3389/fpls.2017.00537. eCollection 2017.
Global warming leads to the concurrence of a number of abiotic and biotic stresses, thus affecting agricultural productivity. Occurrence of abiotic stresses can alter plant-pest interactions by enhancing host plant susceptibility to pathogenic organisms, insects, and by reducing competitive ability with weeds. On the contrary, some pests may alter plant response to abiotic stress factors. Therefore, systematic studies are pivotal to understand the effect of concurrent abiotic and biotic stress conditions on crop productivity. However, to date, a collective database on the occurrence of various stress combinations in agriculturally prominent areas is not available. This review attempts to assemble published information on this topic, with a particular focus on the impact of combined drought and pathogen stresses on crop productivity. In doing so, this review highlights some agriculturally important morpho-physiological traits that can be utilized to identify genotypes with combined stress tolerance. In addition, this review outlines potential role of recent genomic tools in deciphering combined stress tolerance in plants. This review will, therefore, be helpful for agronomists and field pathologists in assessing the impact of the interactions between drought and plant-pathogens on crop performance. Further, the review will be helpful for physiologists and molecular biologists to design agronomically relevant strategies for the development of broad spectrum stress tolerant crops.
全球变暖导致多种非生物和生物胁迫同时出现，从而影响农业生产力。非生物胁迫的发生会通过增强寄主植物对病原生物、昆虫的易感性以及降低与杂草的竞争能力来改变植物与害虫的相互作用。相反，一些害虫可能会改变植物对非生物胁迫因子的反应。因此，系统研究对于理解非生物和生物胁迫同时存在的条件对作物生产力的影响至关重要。然而，迄今为止，尚无一个关于农业重点地区各种胁迫组合发生情况的综合数据库。本综述试图收集关于这一主题的已发表信息，特别关注干旱与病原体胁迫组合对作物生产力的影响。在此过程中，本综述强调了一些对农业具有重要意义的形态生理性状，这些性状可用于鉴定具有复合胁迫耐受性的基因型。此外，本综述概述了近期基因组工具在解读植物复合胁迫耐受性方面的潜在作用。因此，本综述将有助于农学家和田间病理学家评估干旱与植物病原体之间的相互作用对作物表现的影响。此外，该综述将有助于生理学家和分子生物学家设计与农艺学相关的策略，以培育具有广谱胁迫耐受性的作物。
