Scholarlink

<p>Drought is one of the major abiotic stress that hinders plant growth and development. Although the underlying mechanism is not fully understood, melatonin, a plant growth regulator, plays a crucial role in enhancing drought tolerance in rice (<i>Oryza sativa</i> L.). To assess the impact of drought on rice seedlings, we conducted a study investigating the effects of melatonin seed priming on both plant growth and various physio-biochemical indices associated with drought in rice seedlings. Seeds from two distinct rice genotypes, the drought-tolerant Nagina-22, and the drought-susceptible IR-64, were subjected to melatonin treatments at concentrations ranging from 0, 60, 90, 120, 150, and 180&#xa0;ppm and grown for 27&#xa0;days. Drought conditions were induced in 21-day-old seedlings by withholding water for 6&#xa0;days, while control seedlings were consistently watered. Our findings demonstrate that melatonin seed priming led to enhancements in shoot and root length, improved root system architecture, and increased overall plant biomass. Additionally, it preserved chlorophyll content and positively influenced antioxidant activity and protein content in rice seedlings under drought stress. Overall, our study highlights the efficacy of melatonin seed priming, particularly at a concentration of 120&#xa0;ppm, in alleviating the adverse effects of drought in rice.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhancing drought resilience in rice seedlings through melatonin seed priming

  • 期刊论文

  • 发表日期：

    2025年6月11日

查看全文
  • Komal Tyagi,
  • Prathap V.,
  • Prachi Tyagi,
  • Arti Kumari,
  • Nand Lal Meena,
  • Brijesh Lekhak,
  • Iqbal Raja Khan,
  • Rakesh Pandey,
  • Chirag Maheshwari,
  • Aruna Tyagi

摘要

Drought is one of the major abiotic stress that hinders plant growth and development. Although the underlying mechanism is not fully understood, melatonin, a plant growth regulator, plays a crucial role in enhancing drought tolerance in rice (Oryza sativa L.). To assess the impact of drought on rice seedlings, we conducted a study investigating the effects of melatonin seed priming on both plant growth and various physio-biochemical indices associated with drought in rice seedlings. Seeds from two distinct rice genotypes, the drought-tolerant Nagina-22, and the drought-susceptible IR-64, were subjected to melatonin treatments at concentrations ranging from 0, 60, 90, 120, 150, and 180 ppm and grown for 27 days. Drought conditions were induced in 21-day-old seedlings by withholding water for 6 days, while control seedlings were consistently watered. Our findings demonstrate that melatonin seed priming led to enhancements in shoot and root length, improved root system architecture, and increased overall plant biomass. Additionally, it preserved chlorophyll content and positively influenced antioxidant activity and protein content in rice seedlings under drought stress. Overall, our study highlights the efficacy of melatonin seed priming, particularly at a concentration of 120 ppm, in alleviating the adverse effects of drought in rice.