TY - JOUR
T1 - Rhizosheath formation and involvement in foxtail millet (Setaria italica) root growth under drought stress
AU - Liu, Tie Yuan
AU - Ye, Nenghui
AU - Song, Tao
AU - Cao, Yunying
AU - Gao, Bei
AU - Zhang, Di
AU - Zhu, Fuyuan
AU - Chen, Moxian
AU - Zhang, Yingjiao
AU - Xu, Weifeng
AU - Zhang, Jianhua
N1 - Funding Information:
This work was supported by a grant from the National key Research and Development Program of China (2018YFD0200302 and 2017YFD0301502), the Hong Kong Research Grant Council (AoE/M-05/12, CUHK 14122415 and 14160516), a Newton Advanced Fellowship (NSFC-RS: 317611130073, NA160430), the National Natural Science Foundation of China (31422047, 31872169, 31771701), and the Shenzhen Overseas Talents Innovation & Entrepreneurship Funding Scheme (The Peacock Scheme).
PY - 2019/4
Y1 - 2019/4
N2 - The rhizosheath, a layer of soil particles that adheres firmly to the root surface by a combination of root hairs and mucilage, may improve tolerance to drought stress. Setaria italica (L.) P. Beauv. (foxtail millet), a member of the Poaceae family, is an important food and fodder crop in arid regions and forms a larger rhizosheath under drought conditions. Rhizosheath formation under drought conditions has been studied, but the regulation of root hair growth and rhizosheath size in response to soil moisture remains unclear. To address this question, in this study we monitored root hair growth and rhizosheath development in response to a gradual decline in soil moisture. Here, we determined that a soil moisture level of 10%–14% (w/w) stimulated greater rhizosheath production compared to other soil moisture levels. Root hair density and length also increased at this soil moisture level, which was validated by measurement of the expression of root hair-related genes. These findings contribute to our understanding of rhizosheath formation in response to soil water stress.
AB - The rhizosheath, a layer of soil particles that adheres firmly to the root surface by a combination of root hairs and mucilage, may improve tolerance to drought stress. Setaria italica (L.) P. Beauv. (foxtail millet), a member of the Poaceae family, is an important food and fodder crop in arid regions and forms a larger rhizosheath under drought conditions. Rhizosheath formation under drought conditions has been studied, but the regulation of root hair growth and rhizosheath size in response to soil moisture remains unclear. To address this question, in this study we monitored root hair growth and rhizosheath development in response to a gradual decline in soil moisture. Here, we determined that a soil moisture level of 10%–14% (w/w) stimulated greater rhizosheath production compared to other soil moisture levels. Root hair density and length also increased at this soil moisture level, which was validated by measurement of the expression of root hair-related genes. These findings contribute to our understanding of rhizosheath formation in response to soil water stress.
UR - https://www.jipb.net/EN/10.1111/jipb.12716
UR - http://www.scopus.com/inward/record.url?scp=85057310131&partnerID=8YFLogxK
U2 - 10.1111/jipb.12716
DO - 10.1111/jipb.12716
M3 - Journal article
C2 - 30183129
AN - SCOPUS:85057310131
SN - 1672-9072
VL - 61
SP - 449
EP - 462
JO - Journal of Integrative Plant Biology
JF - Journal of Integrative Plant Biology
IS - 4
ER -