Impacts of heat, drought, and their interaction with nutrients on physiology, grain yield, and quality in field crops
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REVIEW ARTICLE
Impacts of heat, drought, and their interaction with nutrients on physiology, grain yield, and quality in field crops Troy Ostmeyer1 • Nathaniel Parker1 • Brent Jaenisch1 • Linah Alkotami2 Carlos Bustamante1 • S. V. Krishna Jagadish1
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Received: 23 May 2020 / Accepted: 11 September 2020 Ó Indian Society for Plant Physiology 2020
Abstract Among different abiotic stresses that negatively affect crop productivity, heat and drought stresses are the most common and their combined stress is highly prevalent under field conditions. Significant research progress has been achieved on heat or drought stress responses in crops, and, more recently, combined heat and drought stress is receiving additional emphasis. Knowledge generated either through controlled environmental chambers or field-based facilities on heat and drought impacts on field crops captures a part of the complex phenomenon. An additional dimension to this interaction and the ability of the plants to respond to and mitigate these stresses depends on their ability to take up and efficiently utilize micro- and macronutrients. Improved nutrient use enhances the tolerance potential of the plant through production of essential compounds such as amino acids and carbohydrates. These, in turn, provide energy required to synthesize stress ameliorating compounds such as reactive oxygen species scavengers, including superoxide dismutase and catalase,
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s40502-020-00538-0) contains supplementary material, which is available to authorized users. Troy Ostmeyer, Nathaniel Parker, Brent Jaenisch, Linah Alkotami, Carlos Bustamante and S. V. Krishna Jagadish have contributed equally to this work. & S. V. Krishna Jagadish [email protected] 1
Department of Agronomy, Kansas State University, 2004 Throckmorton Plant Sciences Center, 1712 Claflin Road, Manhattan, KS 66506-5501, USA
2
Department of Biochemistry and Molecular Biophysics, Kansas State University, 141 Chalmers Hall, 1712 Claflin Road, Manhattan, KS 66506-5501, USA
and balanced hormonal production, which have the potential to reduce or minimize the damage. The review focuses on information generated from controlled environments and field conditions that synthesizes the interactions between heat and nutrients or drought and nutrients in cereals and soybean. The major objective is to highlight if different types of nutrients applied as additional treatment factors either ameliorate or aggravate the impact of these abiotic stress combinations on physiological parameters, grain yield, and quality. In addition, knowledge gaps in addressing these interactions are identified, and directions for future research to help bridge these gaps are given. Keywords Drought stress Grain quality Heat stress Nutrients Stress interactions Yield and yield components
Introduction Prediction models of the global climate estimate an increase in the intensity and frequency of extreme environmental conditions, in terms of
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