Narrow lpa1 Metaxylems Enhance Drought Tolerance and Optimize Water Use for Grain Filling in Dwarf Rice

Rice cultivation needs extensive amounts of water. Moreover, increased frequency of droughts and water scarcity has become a global concern for rice cultivation. Hence, optimization of water use is crucial for sustainable agriculture. Here, we characterized ( ) in vasculature development, water tran...

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Published inFrontiers in plant science Vol. 13; p. 894545
Main Authors Priatama, Ryza A, Heo, Jung, Kim, Sung Hoon, Rajendran, Sujeevan, Yoon, Seoa, Jeong, Dong-Hoon, Choo, Young-Kug, Bae, Jong Hyang, Kim, Chul Min, Lee, Yeon Hee, Demura, Taku, Lee, Young Koung, Choi, Eun-Young, Han, Chang-Deok, Park, Soon Ju
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 10.05.2022
Subjects
drought tolerance
grain filling
metaxylem
Plant Science
rice
semi-dwarf rice
metaxylem
drought tolerance
rice
semi-dwarf rice
grain filling
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Summary:Rice cultivation needs extensive amounts of water. Moreover, increased frequency of droughts and water scarcity has become a global concern for rice cultivation. Hence, optimization of water use is crucial for sustainable agriculture. Here, we characterized ( ) in vasculature development, water transport, drought resistance, and grain yield. We performed genetic combination of with semi-dwarf mutant to offer the optimum rice architecture for more efficient water use. expressed in pre-vascular cells of leaf primordia regulates genes associated with carbohydrate metabolism and cell enlargement. Thus, it plays a role in metaxylem enlargement of the aerial organs. Narrow metaxylem of exhibit leaves curling on sunny day and convey drought tolerance but reduce grain yield in mature plants. However, the genetic combination of with semi-dwarf mutant ( or ) offer optimal water supply and drought resistance without impacting grain-filling rates. Our results show that water use, and transports can be genetically controlled by optimizing metaxylem vessel size and plant height, which may be utilized for enhancing drought tolerance and offers the potential solution to face the more frequent harsh climate condition in the future.
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Edited by: Paolo Bonini, Ngalab, Spain
Reviewed by: Raju Soolanayakanahally, Agriculture and Agri-Food Canada, Canada; Ki-Hong Jung, Kyung Hee University, South Korea
These authors have contributed equally to this work
This article was submitted to Crop and Product Physiology, a section of the journal Frontiers in Plant Science
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2022.894545