The Arabidopsis ARGOS‐LIKE gene regulates cell expansion during organ growth

Plant Journal - Tập 47 Số 1 - Trang 1-9 - 2006
Yuxin Hu1,2, Huay Mei Poh2, Nam‐Hai Chua3
1Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China, and
2Temasek Life Sciences Laboratory, National University of Singapore, Singapore 117604
3Laboratory of Plant Molecular Biology, Rockefeller University, New York, NY 10021, USA

Tóm tắt

SummaryCell expansion, and its coordination with cell division, plays a critical role in the growth and development of plant organs. However, the genes controlling cell expansion during organogenesis are largely unknown. Here, we demonstrate that a novel Arabidopsis gene, ARGOS‐LIKE (ARL), which has some sequence homology to the ARGOS gene, is involved in this process. Reduced expression or overexpression of ARL in Arabidopsis results in smaller or larger cotyledons and leaves as well as other lateral organs, respectively. Anatomical examination of cotyledons and leaves in ARL transgenic plants demonstrates that the alteration in size can be attributed to changes in cell size rather than cell number, indicating that ARL plays a role in cell expansion‐dependent organ growth. ARL is upregulated by brassinosteroid (BR) and this induction is impaired in the BR‐insensitive mutant bri1, but not in the BR‐deficient mutant det2. Ectopic expression of ARL in bri1–119 partially restores cell growth in cotyledons and leaves. Our results suggest that ARL acts downstream of BRI1 and partially mediates BR‐related cell expansion signals during organ growth.

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Tài liệu tham khảo

10.1016/S1369-5266(98)80259-8

10.1007/s004250050528

10.1105/tpc.10.2.219

10.1104/pp.005439

Bechtold N., 1993, In planta Agrobacterium mediated gene transfer by infiltration of adult Arabidopsis thaliana plants, C. R. Acad. Sci. Paris, Sci. de la vie/Life Sci., 316, 1194

10.1105/tpc.001461

10.1101/gad.866201

10.1146/annurev.arplant.49.1.427

10.1007/978-94-011-0473-9_1

10.1105/tpc.004838

10.1242/dev.00619

10.1105/tpc.9.11.1951

10.1046/j.1365-313X.2003.01723.x

10.1002/j.1460-2075.1995.tb00064.x

10.1046/j.1365-313x.2000.00915.x

10.1105/tpc.013557

10.1104/pp.008680

10.1126/science.282.5391.1114

10.1016/S0092-8674(01)00370-1

10.1046/j.1365-313X.1996.9050701.x

10.1101/gad.12.15.2381

10.1073/pnas.96.16.9433

10.1093/emboj/21.6.1267

10.1046/j.1365-313X.2003.01862.x

10.1016/S1369-5266(00)00118-7

10.1007/978-94-011-0473-9_35

10.1105/tpc.7.12.2187

10.1016/S0092-8674(00)80357-8

10.1126/science.272.5260.398

10.1016/S1369-5266(00)00212-0

10.1073/pnas.97.2.942

10.1093/pcp/pcf024

10.1016/S0092-8674(00)81462-2

10.1093/emboj/17.19.5563

10.1006/dbio.2001.0543

10.1126/science.283.5407.1541

10.1242/dev.01028

10.1016/j.pbi.2003.09.009

10.1016/S0092-8674(00)81094-6

10.1242/dev.122.5.1589

10.1199/tab.0072

10.1023/A:1006464430936

10.1038/35066597

10.1101/gad.852200

Xu W., 1995, Arabidopsis TCH4 regulated by hormones and environment, encodes a xyloglucan endotransglycosylase, Plant Cell, 7, 1555

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Plant Journal

Tập 47 Số 1

1-9

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