Barley NARROW LEAFED DWARF1 encoding a WUSCHEL-RELATED HOMEOBOX 3 (WOX3) regulates the marginal development of lateral organs
| Autor: | Naoya Nobori, Shin Ya Tanaka, Takanori Yoshikawa, Jun-Ichi Itoh, Hiroto Ishii, Ken-ichiro Hibara, Yuuki Masumoto, Takatoshi Tanisaka, Shin Taketa |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Cloning Mutant food and beverages Plant Science In situ hybridization Biology 01 natural sciences 03 medical and health sciences 030104 developmental biology Botany Genetics Homeobox Primordium Hordeum vulgare Agronomy and Crop Science Gene 010606 plant biology & botany Plant stem |
| Zdroj: | Breeding Science. 66:416-424 |
| ISSN: | 1347-3735 1344-7610 |
| DOI: | 10.1270/jsbbs.16019 |
| Popis: | Barley (Hordeum vulgare L.) is the fourth most-produced cereal in the world and is mainly utilized as animal feed and malts. Recently barley attracts considerable attentions as healthy food rich in dietary fiber. However, limited knowledge is available about developmental aspects of barley leaves. In the present study, we investigated barley narrow leafed dwarf1 (nld1) mutants, which exhibit thin leaves accompanied by short stature. Detailed histological analysis revealed that leaf marginal tissues, such as sawtooth hairs and sclerenchymatous cells, were lacked in nld1, suggesting that narrowed leaf of nld1 was attributable to the defective development of the marginal regions in the leaves. The defective marginal developments were also appeared in internodes and glumes in spikelets. Map-based cloning revealed that NLD1 encodes a WUSCHEL-RELATED HOMEOBOX 3 (WOX3), an ortholog of the maize NARROW SHEATH genes. In situ hybridization showed that NLD1 transcripts were localized in the marginal edges of leaf primordia from the initiating stage. From these results, we concluded that NLD1 plays pivotal role in the increase of organ width and in the development of marginal tissues in lateral organs in barley. |
| Databáze: | OpenAIRE |
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