Setaria viridis: A Model for C4 Photosynthesis

被引:249
作者
Brutnell, Thomas P. [1 ]
Wang, Lin [1 ]
Swartwood, Kerry [1 ]
Goldschmidt, Alexander [2 ]
Jackson, David [2 ]
Zhu, Xin-Guang [3 ]
Kellogg, Elizabeth [4 ]
Van Eck, Joyce [1 ]
机构
[1] Cornell Univ, Boyce Thompson Inst, Ithaca, NY 14853 USA
[2] Cold Spring Harbor Lab, Cold Spring Harbor, NY 11724 USA
[3] Chinese Acad Sci, Shanghai Inst Biol Sci, Partner Inst Computat Biol, Max Planck Soc, Shanghai 200031, Peoples R China
[4] Univ Missouri, Dept Biol, St Louis, MO 63121 USA
基金
美国国家科学基金会;
关键词
BUNDLE-SHEATH DEFECTIVE2; FOXTAIL MILLET; MAIZE; DIFFERENTIATION; EXPRESSION; MESOPHYLL; GENE; EVOLUTIONARY; EFFICIENCY; DIVERSITY;
D O I
10.1105/tpc.110.075309
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
C-4 photosynthesis drives productivity in several major food crops and bioenergy grasses, including maize (Zea mays), sugarcane (Saccharum officinarum), sorghum (Sorghum bicolor), Miscanthus x giganteus, and switchgrass (Panicum virgatum). Gains in productivity associated with C-4 photosynthesis include improved water and nitrogen use efficiencies. Thus, engineering C-4 traits into C-3 crops is an attractive target for crop improvement. However, the lack of a small, rapid cycling genetic model system to study C-4 photosynthesis has limited progress in dissecting the regulatory networks underlying the C-4 syndrome. Setaria viridis is a member of the Panicoideae clade and is a close relative of several major feed, fuel, and bioenergy grasses. It is a true diploid with a relatively small genome of similar to 510 Mb. Its short stature, simple growth requirements, and rapid life cycle will greatly facilitate genetic studies of the C-4 grasses. Importantly, S. viridis uses an NADP-malic enzyme subtype C-4 photosynthetic system to fix carbon and therefore is a potentially powerful model system for dissecting C-4 photosynthesis. Here, we summarize some of the recent advances that promise greatly to accelerate the use of S. viridis as a genetic system. These include our recent successful efforts at regenerating plants from seed callus, establishing a transient transformation system, and developing stable transformation.
引用
收藏
页码:2537 / 2544
页数:8
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