A G protein alpha null mutation confers prolificacy potential in maize [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 572.8 Biochemical genetics
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2015
• Mô tả vật lý: Size: p. 4511-4515 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 261188
• Chủ đề: 1. 59 basic biological sciences; 2. 60 applied life sciences; 3. Cell division; 4. Development; 5. Ear; 6. G protein; 7. Maize; 8. Signalling

Tóm tắt

Plasticity in plant development is controlled by environmental signals through largely unknown signalling networks. Signalling coupled by the heterotrimeric G protein complex underlies various developmental pathways in plants. The morphology of two plastic developmental pathways, root system architecture and female inflorescence formation, was quantitatively assessed in a mutant compact plant 2 (ct2) lacking the alpha subunit of the heterotrimeric G protein complex in maize. The ct2 mutant partially compensated for a reduced shoot height by increased total leaf number, and had far more ears, even in the presence of pollination signals. Lastly, the maize heterotrimeric G protein complex is important in some plastic developmental traits in maize. In particular, the maize G? subunit is required to dampen the overproduction of female inflorescences.