Application of HB17, an Arabidopsis class II homeodomain-leucine zipper transcription factor, to regulate chloroplast number and photosynthetic capacity

Application of HB17, an Arabidopsis class II homeodomain-leucine zipper transcription factor, to regulate chloroplast number and photosynthetic capacity

Transcription factors are proposed as suitable targets for the control of traits such as yield or food quality in plants. This study reports the results of a functional genomics research effort that identified ATHB17, a transcription factor from the homeodomain-leucine zipper class II family, as a n...

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Veröffentlicht in:Journal of experimental botany. - 1985. - 64(2013), 14 vom: 17. Nov., Seite 4479-90
1. Verfasser: Hymus, Graham J (VerfasserIn)
Weitere Verfasser: Cai, Suqin, Kohl, Elizabeth A, Holtan, Hans E, Marion, Colleen M, Tiwari, Shiv, Maszle, Don R, Lundgren, Marjorie R, Hong, Melissa C, Channa, Namitha, Loida, Paul, Thompson, Rebecca, Taylor, J Philip, Rice, Elena, Repetti, Peter P, Ratcliffe, Oliver J, Reuber, T Lynne, Creelman, Robert A
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article Chloroplast number chloroplast size homeodomain-leucine zipper leaf development photosynthetic capacity transcription factor. Arabidopsis Proteins HB17 protein, Arabidopsis Homeodomain Proteins mehr... RNA, Messenger Transcription Factors
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245 1 0 |a Application of HB17, an Arabidopsis class II homeodomain-leucine zipper transcription factor, to regulate chloroplast number and photosynthetic capacity 
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520 |a Transcription factors are proposed as suitable targets for the control of traits such as yield or food quality in plants. This study reports the results of a functional genomics research effort that identified ATHB17, a transcription factor from the homeodomain-leucine zipper class II family, as a novel target for the enhancement of photosynthetic capacity. It was shown that ATHB17 is expressed natively in the root quiescent centre (QC) from Arabidopsis embryos and seedlings. Analysis of the functional composition of genes differentially expressed in the QC from a knockout mutant (athb17-1) compared with its wild-type sibling revealed the over-representation of genes involved in auxin stimulus, embryo development, axis polarity specification, and plastid-related processes. While no other phenotypes were observed in athb17-1 plants, overexpression of ATHB17 produced a number of phenotypes in Arabidopsis including enhanced chlorophyll content. Image analysis of isolated mesophyll cells of 35S::ATHB17 lines revealed an increase in the number of chloroplasts per unit cell size, which is probably due to an increase in the number of proplastids per meristematic cell. Leaf physiological measurements provided evidence of improved photosynthetic capacity in 35S::ATHB17 lines on a per unit leaf area basis. Estimates of the capacity for ribulose-1,5-bisphosphate-saturated and -limited photosynthesis were significantly higher in 35S::ATHB17 lines 
650 4 |a Journal Article 
650 4 |a Chloroplast number 
650 4 |a chloroplast size 
650 4 |a homeodomain-leucine zipper 
650 4 |a leaf development 
650 4 |a photosynthetic capacity 
650 4 |a transcription factor. 
650 7 |a Arabidopsis Proteins  |2 NLM 
650 7 |a HB17 protein, Arabidopsis  |2 NLM 
650 7 |a Homeodomain Proteins  |2 NLM 
650 7 |a RNA, Messenger  |2 NLM 
650 7 |a Transcription Factors  |2 NLM 
700 1 |a Cai, Suqin  |e verfasserin  |4 aut 
700 1 |a Kohl, Elizabeth A  |e verfasserin  |4 aut 
700 1 |a Holtan, Hans E  |e verfasserin  |4 aut 
700 1 |a Marion, Colleen M  |e verfasserin  |4 aut 
700 1 |a Tiwari, Shiv  |e verfasserin  |4 aut 
700 1 |a Maszle, Don R  |e verfasserin  |4 aut 
700 1 |a Lundgren, Marjorie R  |e verfasserin  |4 aut 
700 1 |a Hong, Melissa C  |e verfasserin  |4 aut 
700 1 |a Channa, Namitha  |e verfasserin  |4 aut 
700 1 |a Loida, Paul  |e verfasserin  |4 aut 
700 1 |a Thompson, Rebecca  |e verfasserin  |4 aut 
700 1 |a Taylor, J Philip  |e verfasserin  |4 aut 
700 1 |a Rice, Elena  |e verfasserin  |4 aut 
700 1 |a Repetti, Peter P  |e verfasserin  |4 aut 
700 1 |a Ratcliffe, Oliver J  |e verfasserin  |4 aut 
700 1 |a Reuber, T Lynne  |e verfasserin  |4 aut 
700 1 |a Creelman, Robert A  |e verfasserin  |4 aut 
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