Parental drought priming enhances tolerance to low temperature in wheat (Triticum aestivum) offspring

Research output: Contribution to journalJournal articleResearchpeer-review

  • Junhong Guo
  • Hongyan Wang
  • Shengqun Liu
  • Yongjun Wang
  • Liu, Fulai
  • Xiangnan Li

Low temperature is one of the major environmental stresses that limit crop growth and grain yield in wheat (Triticum aestivum L.). Drought priming at the vegetative stage could enhance wheat tolerance to later cold stress; however, the transgenerational effects of drought priming on wheat offspring's cold stress tolerance remains unclear. Here, the low temperature responses of offspring were tested after the parental drought priming treatment at grain filling stage. The offspring plants from parental drought priming treatment had a higher abscisic acid (ABA) level and lower osmotic potential (Ψo) than the control plants under cold conditions. Moreover, parental drought priming increased the antioxidant enzyme activities and decreased hydrogen peroxide (H2O2) accumulation in offspring. In comparison to control plants, parental drought priming plants had a higher ATP concentration and higher activities of ATPase and the enzymes involved in sucrose biosynthesis and starch metabolism. The results indicated that parental drought priming induced low temperature tolerance in offspring by regulating endogenous ABA levels and maintaining the redox homeostasis and the balance of carbohydrate metabolism, which provided a potential approach for cold resistant cultivation in wheat.

Original languageEnglish
JournalAustralian Journal of Plant Physiology
Volume49
Issue number11
Pages (from-to)946-957
ISSN1445-4408
DOIs
Publication statusPublished - 2022

ID: 315175701