Sökning: onr:"swepub:oai:DiVA.org:uu-134820" > ATHB12, an ABA-Indu...
Fältnamn | Indikatorer | Metadata |
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000 | 03852naa a2200601 4500 | |
001 | oai:DiVA.org:uu-134820 | |
003 | SwePub | |
008 | 101201s2010 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1348202 URI |
024 | 7 | a https://doi.org/10.1093/pcp/pcq1082 DOI |
040 | a (SwePub)uu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Son, Ora4 aut |
245 | 1 0 | a ATHB12, an ABA-Inducible Homeodomain-Leucine Zipper (HD-Zip) Protein of Arabidopsis, Negatively Regulates the Growth of the Inflorescence Stem by Decreasing the Expression of a Gibberellin 20-Oxidase Gene |
264 | c 2010-07-28 | |
264 | 1 | b Oxford University Press (OUP),c 2010 |
338 | a print2 rdacarrier | |
520 | a Arabidopsis thaliana homeobox 12 (ATHB12) is rapidly induced by ABA and water stress. A T-DNA insertion mutant of ATHB12 with a reduced level of ATHB12 expression in stems had longer inflorescence stems and reduced sensitivity to ABA during germination. A high level of transcripts of gibberellin 20-oxidase 1 (GA20ox1), a key enzyme in the synthesis of gibberellins, was detected in athb12 stems, while transgenic lines overexpressing ATHB12 (A12OX) had a reduced level of GA20ox1 in stems. Consistent with these data, ABA treatment of wild-type plants resulted in decreased GA20ox1 expression whereas ABA treatment of the athb12 mutant gave rise to slightly decreased GA20ox1 expression. Retarded stem growth in 3-week-old A12OX plants was rescued by exogenous GA(9), but not by GA(12), and less GA(9) was detected in A12OX stems than in wild-type stems. These data imply that ATHB12 decreases GA20ox1 expression in stems. On the other hand, the stems of A12OX plants grew rapidly after the first 3 weeks, so that they were almost as high as wild-type plants at about 5 weeks after germination. We also found changes in the stems of transgenic plants overexpressing ATHB12, such as alterations of expression GA20ox and GA3ox genes, and of GA(4) levels, which appear to result from feedback regulation. Repression of GA20ox1 by ATHB12 was confirmed by transfection of leaf protoplasts. ABA-treated protoplasts also showed increased ATHB12 expression and reduced GA20ox1 expression. These findings all suggest that ATHB12 negatively regulates the expression of a GA 20-oxidase gene in inflorescence stems. | |
650 | 7 | a NATURVETENSKAPx Biologi0 (SwePub)1062 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Biological Sciences0 (SwePub)1062 hsv//eng |
653 | a ABA | |
653 | a ATHB12 | |
653 | a GA20ox1 | |
653 | a Gibberellic acid | |
653 | a Homeobox | |
653 | a Biology | |
653 | a Biologi | |
700 | 1 | a Hur, Yoon-Sun4 aut |
700 | 1 | a Kim, Yun-Kyung4 aut |
700 | 1 | a Lee, Hyun-Jung4 aut |
700 | 1 | a Kim, Sunghan4 aut |
700 | 1 | a Kim, Mi-Ran4 aut |
700 | 1 | a Nam, Kyoung Hee4 aut |
700 | 1 | a Lee, Myung-Sok4 aut |
700 | 1 | a Kim, Bu-Yong4 aut |
700 | 1 | a Park, Jongbum4 aut |
700 | 1 | a Park, Jungan4 aut |
700 | 1 | a Lee, Suk-Chan4 aut |
700 | 1 | a Hanada, Atsushi4 aut |
700 | 1 | a Yamaguchi, Shinjiro4 aut |
700 | 1 | a Lee, In-Jung4 aut |
700 | 1 | a Kim, Seoung-Ki4 aut |
700 | 1 | a Yun, Dae-Jin4 aut |
700 | 1 | a Söderman, Evau Uppsala universitet,Institutionen för ekologi och genetik4 aut |
700 | 1 | a Cheon, Choong-Ill4 aut |
710 | 2 | a Uppsala universitetb Institutionen för ekologi och genetik4 org |
773 | 0 | t Plant and Cell Physiologyd : Oxford University Press (OUP)g 51:9, s. 1537-1547q 51:9<1537-1547x 0032-0781x 1471-9053 |
856 | 4 | u https://academic.oup.com/pcp/article-pdf/51/9/1537/19285746/pcq108.pdf |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-134820 |
856 | 4 8 | u https://doi.org/10.1093/pcp/pcq108 |
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