Phytochromes influence stomatal conductance plasticity in Arabidopsis thaliana

被引：27

作者：

Boggs, Julian Z. ^{[1
]}

Loewy, Katrina ^{[1
]}

Bibee, Katherine ^{[1
]}

Heschel, M. Shane ^{[1
]}

机构：

[1] Colorado Coll, Dept Biol, Colorado Springs, CO 80903 USA

来源：

PLANT GROWTH REGULATION | 2010年 / 60卷 / 02期

关键词：

Phytochrome; Drought stress; Stomatal conductance; Abscisic acid; ABSCISIC-ACID; RESPONSES; GERMINATION; ADAPTATION; MECHANISMS; INVOLVEMENT; AVOIDANCE; EVOLUTION; SELECTION; MUTANT;

D O I：

10.1007/s10725-009-9427-3

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The ability to sense and respond effectively to drought stress can be important for plant fitness. Here, phytochrome loss-of-function mutants were grown in dry and moist conditions to examine the role of three photoreceptors (phyA, phyB, and phyE) in stomatal conductance (g (ST)) and abscisic acid (ABA) concentration. Overall, drought treatment plants had lower g (ST) than moist treatment plants. However, the wild-type Landsberg erecta line had a less pronounced conductance response to drought treatment than the phytochrome mutants, suggesting a role for phytochrome in suppressing drought tolerance. Phytochrome gene effects were potentially additive for g (ST); however, PHYB and PHYE effects were nonadditive for ABA concentration.

引用

页码：77 / 81

页数：5

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