Spermidine enhances heat tolerance of rice seeds during mid-filling stage and promote subsequent seed germination.

ABSTRACT:

Introduction

Heat stress is a vital factor which restricts rice seed quality and yield. However, the response mechanism to heat stress in the mid filling stage of rice seed is unclear.

Methods

In the present study we integrated phenotypic analysis with biochemical, hormone, and gene expression analysis in order to explore technologies for improving rice seeds heat tolerance and subsequent seed germination.

Results

Spermidine (Spd) application effectively alleviated the damage of heat stress treatment during mid-filling stage (HTM, 12-20 days after pollination) on seed development, promoted subsequent seed germination and seedlings establishment. Spd significantly increased seed dry weight, starch and amylose contents during seed development under heat stress, and impr

SUBMITTER: Huang Y 

PROVIDER: S-EPMC10543890 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature