Increasing Rice Seedling Growth under Induced Water-Deficient Conditions Using Indole-3-Acetic Acid Produced from <em>Enterobacter</em> sp. Bacteria

Author:

Chiangmai P. NaORCID,Khianngam S.ORCID,Meetum P.ORCID,Pootaeng-on Y.ORCID

Abstract

Purpose: Water deficiency stress affects rice growth and productivity around the world while reducing indole-3-acetic acid (IAA) levels within plants. This study aims to determine the effects of IAA, produced from the endophytic bacteria Enterobacter sp. (RD4-1-1), on the germination and seedling growth of two lowland rice varieties, namely, RD31 and RD41, under water deficiency stress. Research Method: Water deficiency was simulated in culture medium [using the percentage of polyethylene glycol 6000 (PEG)] and soil cultivation (using different watering frequencies). The effects of RD4-1-1 IAA at various concentrations on rice under water deficiency stress were assessed by measuring a variety of characteristics related to germination and seedling growth. Findings: The effects of RD4-1-1 IAA supplementation in rice depended on the availability of water and the rice variety. RD4-1-1 IAA promoted the germination and growth of rice seedlings according to most measured characteristics, but the effective concentration levels differed with water deficiency in RD31 and RD41 varieties. In particular, the appropriate concentration of bacterial IAA was lower and was in a narrower range when applied to plants in soil compared with that required when IAA was used in plants cultured on medium. Originality/ Value: This study is one of few studies to report the effects of appropriate concentrations of microorganism-produced plant hormones on rice growth under water-deficient conditions.

Publisher

Sri Lanka Journals Online (JOL)

Subject

Agricultural and Biological Sciences (miscellaneous)

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3