Interaction of aluminium and drought stress on root growth and crop yield on acid soils

Scope The present review mainly focuses on the interaction of Al and drought on root development, crop growth and yield on acid soils

Zhong-Bao Yang

2013

Scholarcy highlights

  • Abiotic stresses such as drought, heat, soil acidity and soil salinity could cause extensive losses to global agricultural productivity and thereby impact food security, in the developing countries
  • Resource-poor farmers are facing a range of challenges such as variability in weather patterns induced by global climate change, soil acidity and low soil fertility due to nutrient depletion, and combinations of different abiotic stresses
  • Drought can be exacerbated by subsoil Al toxicity, which reduces root elongation and restricts the plant roots to explore the acidic subsoil to absorb water, and diminishes the ability to avoid drought stress
  • Little is known about the interaction of Al toxicity and low soil moisture stress at the root-tip level
  • The physiological and molecular evidence suggests that the reason for this Alaggravated drought sensitivity of root apices is a disturbance of the gene regulatory network involved in abscisic acid signal transduction and cross-talk with other phytohormones such as CKs and ethylene that are necessary for maintaining root growth under drought
  • These suggestions need to be substantiated through further studies in the future focusing on the following aspects: i) Understanding the role of genes related to cell wall Clarification of the cross-talk of phytohormones in the Al-regulated drought-inhibited root elongation necessary to better understand the internal regulatory mechanism of root growth under individual and combined stresses using reverse genetic approaches; iii) Comparative analysis of the relationship between Al toxicity and drought stress in monocots and dicots which appears attractive given the different structural components of the CW

Need more features? Save interactive summary cards to your Scholarcy Library.