Molecular mechanisms and nutrient regulation of crop root responses to drought stress: interactions with rhizosphere microorganisms

Rentao Xiong, Yinglong Chen

Research output: Chapter in Book/Conference paperChapterpeer-review

Abstract

Drought poses a significant threat to global food security by causing substantial losses in crop production. Due to their fixed growth characteristics, crops are inherently vulnerable to stress, necessitating the evolution of adaptive mechanisms. When exposed to drought stress, crop root systems swiftly detect the challenge and initiate signaling pathways. Consequently, alterations occur in the morphological structure, chemical composition, and biological quality of roots, impacting the establishment of aboveground photosynthesis and ultimately reducing yield. Traditional approaches to enhancing plant drought tolerance predominantly involve techniques such as molecular marker breeding and genetic engineering, aimed at introducing functional genes directly involved in drought response. These efforts aim to identify phenotypic traits crucial for drought tolerance and optimize genotype selection through molecular breeding. This chapter comprehensively reviews the molecular mechanisms underlying root responses to drought stress, explores nutrient regulation, and examines the interactions with rhizosphere microorganisms. Additionally, it underscores the importance of genetic research in elucidating root development and growth traits under drought conditions.

Original languageEnglish
Title of host publicationSustainable Agriculture under Drought Stress
Subtitle of host publicationIntegrated Soil, Water and Nutrient Management
EditorsHossan Etesami, Yinglong Chen
PublisherAcademic Press
Chapter30
Pages499-509
Number of pages11
ISBN (Electronic)9780443239571
ISBN (Print)9780443239564
DOIs
Publication statusPublished - 18 Oct 2024

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