共 104 条
Diverse Roles of Strigolactones in Plant Development
被引:307
作者:
Brewer, Philip B.
[1
]
Koltai, Hinanit
[2
]
Beveridge, Christine A.
[1
]
机构:
[1] Univ Queensland, Sch Biol Sci, St Lucia, Qld 4072, Australia
[2] Agr Res Org, Volcani Ctr, Inst Plant Sci, IL-50250 Bet Dagan, Israel
基金:
澳大利亚研究理事会;
关键词:
strigolactone;
branching;
root;
secondary growth;
germination;
symbiosis;
light;
nutrient;
evolution;
ROOT-SYSTEM ARCHITECTURE;
F-BOX PROTEIN;
AXILLARY BUD OUTGROWTH;
LEAF SENESCENCE;
PHOSPHATE STARVATION;
ACTS DOWNSTREAM;
AUXIN BIOSYNTHESIS;
RMS1;
MUTANT;
KEY ROLE;
ARABIDOPSIS;
D O I:
10.1093/mp/sss130
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:
With the discovery of strigolactones as root exudate signals that trigger parasitic weed seed germination, and then as a branching inhibitor and plant hormone, the next phase of strigolactone research has quickly revealed this hormone class as a major player in optimizing plant growth and development. From the early stages of plant evolution, it seems that strigolactones were involved in enabling plants to modify growth in order to gain advantage in competition with neighboring organisms for limited resources. For example, a moss plant can alter its growth in response to strigolactones emanating from a neighbor. Within a higher plant, strigolactones appear to be involved in controlling the balance of resource distribution via strategic modification of growth and development. Most notably, higher plants that encounter phosphate deficiency increase strigolactone production, which changes root growth and promotes fungal symbiosis to enhance phosphate intake. The shoot also changes by channeling resources away from unessential leaves and branches and into the main stem and root system. This hormonal response is a key adaption that radically alters whole-plant architecture in order to optimize growth and development under diverse environmental conditions.
引用
收藏
页码:18 / 28
页数:11
相关论文