MIZU-KUSSEI1 (MIZ1) and GNOM/MIZ2 control not only positive hydrotropism but also phototropism in Arabidopsis roots

Pang, Lei1,7; Kobayashi, Akie1; Atsumi, Yuka2,8; Miyazawa, Yutaka3; Fujii, Nobuharu1; Dietrich, Daniela4,5,9; Bennett, Malcolm J.4,5; Takahashi, Hideyuki1,6

2023-09-13

10.1093/jxb/erad193

JOURNAL OF EXPERIMENTAL BOTANY   Impact Factor & Quartile

0022-0957

1460-2431

["MIZU-KUSSEI1(MIZ1) and GNOM/MIZ2control both hydrotropism and phototropism, showing a molecular crosstalk between the two tropisms in Arabidopsis roots.","In response to unilateral blue light illumination, roots of some plant species such as Arabidopsis thaliana exhibit negative phototropism (bending away from light), which is important for light avoidance in nature. MIZU-KUSSEI1 (MIZ1) and GNOM/MIZ2 are essential for positive hydrotropism (i.e. in the presence of a moisture gradient, root bending towards greater water availability). Intriguingly, mutations in these genes also cause a substantial reduction in phototropism. Here, we examined whether the same tissue-specific sites of expression required for MIZ1- and GNOM/MIZ2-regulated hydrotropism in Arabidopsis roots are also required for phototropism. The attenuated phototropic response of miz1 roots was completely restored when a functional MIZ1-green fluorescent protein (GFP) fusion was expressed in the cortex of the root elongation zone but not in other tissues such as root cap, meristem, epidermis, or endodermis. The hydrotropic defect and reduced phototropism of miz2 roots were restored by GNOM/MIZ2 expression in either the epidermis, cortex, or stele, but not in the root cap or endodermis. Thus, the sites in root tissues that are involved in the regulation of MIZ1- and GNOM/MIZ2-dependent hydrotropism also regulate phototropism. These results suggest that MIZ1- and GNOM/MIZ2-mediated pathways are, at least in part, shared by hydrotropic and phototropic responses in Arabidopsis roots."]

Arabidopsis roots hydrotropism MIZ1 MIZ2 phototropism

SCI

English

Others

Plant Sciences

Plant Sciences

WOS:001003712400001

OXFORD UNIV PRESS

PLANT & ANIMAL SCIENCE

Web of Science

1.Tohoku Univ, Grad Sch Life Sci, 2-1-1 Katahira,Aoba Ku, Sendai 9808577, Japan
2.Yamagata Univ, Grad Sch Sci & Engn, 1-4-12 Kojirakawa Machi, Yamagata 9908560, Japan
3.Yamagata Univ, Fac Sci, 1-4-12 Kojirakawa Machi, Yamagata 9908560, Japan
4.Univ Nottingham, Ctr Plant Integrat Biol, Nottingham LE12 5RD, England
5.Univ Nottingham, Sch Biosci, Plant & Crop Sci, Nottingham LE12 5RD, England
6.Chiba Univ, Grad Sch Hort, Res Ctr Space Agr & Hort, 648 Matsudo, Chiba 2718510, Japan
7.Southern Univ Sci & Technol, Sch Life Sci, Inst Plant & Food Sci, Guangdong Higher Educ Inst,Key Lab Mol Design Plan, Shenzhen, Peoples R China
8.Snow Brand Seed Co Ltd, 36-1 Nishinopporo, Ebetsu, Hokkaido 0690832, Japan
9.Univ Bristol, Sch Biol Sci, Bristol BS8 1TQ, England

Pang, Lei,Kobayashi, Akie,Atsumi, Yuka,et al. MIZU-KUSSEI1 (MIZ1) and GNOM/MIZ2 control not only positive hydrotropism but also phototropism in Arabidopsis roots[J]. JOURNAL OF EXPERIMENTAL BOTANY,2023,74(17).

Pang, Lei.,Kobayashi, Akie.,Atsumi, Yuka.,Miyazawa, Yutaka.,Fujii, Nobuharu.,...&Takahashi, Hideyuki.(2023).MIZU-KUSSEI1 (MIZ1) and GNOM/MIZ2 control not only positive hydrotropism but also phototropism in Arabidopsis roots.JOURNAL OF EXPERIMENTAL BOTANY,74(17).

Pang, Lei,et al."MIZU-KUSSEI1 (MIZ1) and GNOM/MIZ2 control not only positive hydrotropism but also phototropism in Arabidopsis roots".JOURNAL OF EXPERIMENTAL BOTANY 74.17(2023).