Harnessing polyploidy and nitric oxide for improved arsenic tolerance in Oryza sativa.

ABSTRACT:

Background

Arsenic (As) stress severely impairs plant growth and physiology, resulting in diminished crop quality and yield. Nitric oxide (NO) has been found to alleviate heavy metal toxicity effectively. This study aims to examine how NO donor sodium nitroprusside (50 µM) in conjunction with different arsenic levels (10 µM and 25 µM) affect the growth of diploid and autotetraploid rice.

Results

When exposed to As (25 µM), diploid rice showed reductions in root length (29.71%), shoot length (33.40%), fresh root weight (83.62%), and fresh shoot weight (79.06%), whereas tetraploid rice showed reductions by 18.58%, 18.46%, 60.00%, and 54.19% of the control, respectively. Notably, tetraploid rice absorbed less As than diploid rice. NO application mitigated As toxicity, particula

SUBMITTER: Shahid MQ 

PROVIDER: S-EPMC12625392 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature