Rights statement: This is the peer reviewed version of the following article:Zhang, Y, Xu, F, Ding, Y, et al. Abscisic acid mediates barley rhizosheath formation under mild soil drying by promoting root hair growth and auxin response. Plant Cell Environ. 2021; 44, 6: 1935– 1945. https://doi.org/10.1111/pce.14036 which has been published in final form at https://onlinelibrary.wiley.com/doi/10.1111/pce.14036 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Abscisic acid mediates barley rhizosheath formation under mild soil drying by promoting root hair growth and auxin response
AU - Zhang, Y.
AU - Xu, F.
AU - Ding, Y.
AU - Du, H.
AU - Zhang, Q.
AU - Dang, X.
AU - Cao, Y.
AU - Dodd, I.C.
AU - Xu, W.
N1 - This is the peer reviewed version of the following article:Zhang, Y, Xu, F, Ding, Y, et al. Abscisic acid mediates barley rhizosheath formation under mild soil drying by promoting root hair growth and auxin response. Plant Cell Environ. 2021; 44, 6: 1935– 1945. https://doi.org/10.1111/pce.14036 which has been published in final form at https://onlinelibrary.wiley.com/doi/10.1111/pce.14036 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
PY - 2021/6/30
Y1 - 2021/6/30
N2 - Soil drying enhances root ABA accumulation and rhizosheath formation, but whether ABA mediates rhizosheath formation is unclear. Here, we used the ABA-deficient mutant Az34 to investigate molecular and morphological changes by which ABA could affect rhizosheath formation. Mild soil drying with intermittent watering increased rhizosheath formation by promoting root and root hair elongation. Attenuated root ABA accumulation in Az34 barley constrained the promotion of root length and root hair length by drying soil, such that Az34 had a smaller rhizosheath. Pharmacological experiments of adding fluridone (an ABA biosynthesis inhibitor) and ABA to drying soil restricted and enhanced rhizosheath formation respectively in Az34 and wild-type Steptoe barley. RNA sequencing suggested that ABA accumulation mediates auxin synthesis and responses and root and root hair elongation in drying soil. In addition, adding indole-3-acetic acid (IAA) to drying soil increased rhizosheath formation by promoting root and root hair elongation in Steptoe and Az34 barley. Together, these results show that ABA accumulation induced by mild soil drying enhance barley rhizosheath formation, which may be achieved through promoting auxin response. © 2021 John Wiley & Sons Ltd.
AB - Soil drying enhances root ABA accumulation and rhizosheath formation, but whether ABA mediates rhizosheath formation is unclear. Here, we used the ABA-deficient mutant Az34 to investigate molecular and morphological changes by which ABA could affect rhizosheath formation. Mild soil drying with intermittent watering increased rhizosheath formation by promoting root and root hair elongation. Attenuated root ABA accumulation in Az34 barley constrained the promotion of root length and root hair length by drying soil, such that Az34 had a smaller rhizosheath. Pharmacological experiments of adding fluridone (an ABA biosynthesis inhibitor) and ABA to drying soil restricted and enhanced rhizosheath formation respectively in Az34 and wild-type Steptoe barley. RNA sequencing suggested that ABA accumulation mediates auxin synthesis and responses and root and root hair elongation in drying soil. In addition, adding indole-3-acetic acid (IAA) to drying soil increased rhizosheath formation by promoting root and root hair elongation in Steptoe and Az34 barley. Together, these results show that ABA accumulation induced by mild soil drying enhance barley rhizosheath formation, which may be achieved through promoting auxin response. © 2021 John Wiley & Sons Ltd.
KW - abscisic acid
KW - auxin
KW - rhizosheath formation
KW - root hair
KW - root length
KW - soil drying
U2 - 10.1111/pce.14036
DO - 10.1111/pce.14036
M3 - Journal article
VL - 44
SP - 1935
EP - 1945
JO - Plant, Cell and Environment
JF - Plant, Cell and Environment
SN - 0140-7791
IS - 6
ER -