scholarly journals A Raf-like protein kinase BHP mediates blue light-dependent stomatal opening

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Maki Hayashi ◽  
Shin-ichiro Inoue ◽  
Yoshihisa Ueno ◽  
Toshinori Kinoshita
Keyword(s):  
Protein Kinase ◽  
Blue Light ◽  
Stomatal Opening

scholarly journals Contributions of cryptochromes and phototropins to stomatal opening through the day

2020 ◽  
Vol 47 (3) ◽  
pp. 226
Author(s):  
Fang Wang ◽  
T. Matthew Robson ◽  
Jorge J. Casal ◽  
Alexey Shapiguzov ◽  
Pedro J. Aphalo
Keyword(s):  
Blue Light ◽  
Red Light ◽  
Carbon Assimilation ◽  
Stomatal Opening ◽  
Effective Quantum Yield ◽  
Whole Plant ◽  
Carbon Assimilation Rate ◽  
Psii Photochemistry ◽  
Changing Roles ◽  
Time Courses

The UV-A/blue photoreceptors phototropins and cryptochromes are both known to contribute to stomatal opening (Δgs) in blue light. However, their relative contributions to the maintenance of gs in blue light through the whole photoperiod remain unknown. To elucidate this question, Arabidopsis phot1 phot2 and cry1 cry2 mutants (MTs) and their respective wild types (WTs) were irradiated with 200 μmolm–2s–1 of blue-, green- or red-light (BL, GL or RL) throughout a 11-h photoperiod. Stomatal conductance (gs) was higher under BL than under RL or GL. Under RL, gs was not affected by either of the photoreceptor mutations, but under GL gs was slightly lower in cry1 cry2 than its WT. Under BL, the presence of phototropins was essential for rapid stomatal opening at the beginning of the photoperiod, and maximal stomatal opening beyond 3 h of irradiation required both phototropins and cryptochromes. Time courses of whole-plant net carbon assimilation rate (Anet) and the effective quantum yield of PSII photochemistry (ΦPSII) were consistent with an Anet-independent contribution of BL on gs both in phot1 phot2 and cry1 cry2 mutants. The changing roles of phototropins and cryptochromes through the day may allow more flexible coordination between gs and Anet.

scholarly journals Raf-like kinases CBC1 and CBC2 negatively regulate stomatal opening by negatively regulating plasma membrane H+-ATPase phosphorylation in Arabidopsis

2020 ◽  
Vol 19 (1) ◽  
pp. 88-98 ◽  
Author(s):  
Maki Hayashi ◽  
Hodaka Sugimoto ◽  
Hirotaka Takahashi ◽  
Motoaki Seki ◽  
Kazuo Shinozaki ◽  
...  
Keyword(s):  
Plasma Membrane ◽  
Blue Light ◽  
Guard Cells ◽  
Stomatal Opening

Raf-like kinases CBC1 and CBC2 negatively regulate phosphorylation of plasma membrane H+-ATPase in guard cells and blue light-dependent stomatal opening.

scholarly journals Role of blue and red light in stomatal dynamic behaviour

2019 ◽  
Vol 71 (7) ◽  
pp. 2253-2269 ◽  
Author(s):  
Jack S A Matthews ◽  
Silvere Vialet-Chabrand ◽  
Tracy Lawson
Keyword(s):  
Blue Light ◽  
Red Light ◽  
Light Response ◽  
Early Morning ◽  
Stomatal Opening ◽  
Carbon Gain ◽  
Blue Light Response ◽  
Order Of Magnitude ◽  
Photosynthetic Responses ◽  
Novel Target

Abstract Plants experience changes in light intensity and quality due to variations in solar angle and shading from clouds and overlapping leaves. Stomatal opening to increasing irradiance is often an order of magnitude slower than photosynthetic responses, which can result in CO2 diffusional limitations on leaf photosynthesis, as well as unnecessary water loss when stomata continue to open after photosynthesis has reached saturation. Stomatal opening to light is driven by two distinct pathways; the ‘red’ or photosynthetic response that occurs at high fluence rates and saturates with photosynthesis, and is thought to be the main mechanism that coordinates stomatal behaviour with photosynthesis; and the guard cell-specific ‘blue’ light response that saturates at low fluence rates, and is often considered independent of photosynthesis, and important for early morning stomatal opening. Here we review the literature on these complicated signal transduction pathways and osmoregulatory processes in guard cells that are influenced by the light environment. We discuss the possibility of tuning the sensitivity and magnitude of stomatal response to blue light which potentially represents a novel target to develop ideotypes with the ‘ideal’ balance between carbon gain, evaporative cooling, and maintenance of hydraulic status that is crucial for maximizing crop performance and productivity.

scholarly journals Reversal by Green Light of Blue Light-stimulated Stomatal Opening in Intact, Attached Leaves of Arabidopsis Operates Only in the Potassium-dependent, Morning Phase of Movement

2006 ◽  
Vol 47 (3) ◽  
pp. 332-339 ◽  
Author(s):  
Lawrence D. Talbott ◽  
Jamila W. Hammad ◽  
Lucy Cien Harn ◽  
Vi Hai Nguyen ◽  
Jaynita Patel ◽  
...  
Keyword(s):  
Blue Light ◽  
Green Light ◽  
Stomatal Opening

scholarly journals Blue light and CO2 signals converge to regulate light-induced stomatal opening

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Asami Hiyama ◽  
Atsushi Takemiya ◽  
Shintaro Munemasa ◽  
Eiji Okuma ◽  
Naoyuki Sugiyama ◽  
...  
Keyword(s):  
Blue Light ◽  
Stomatal Opening
Sign in / Sign up

Export Citation Format

Share Document