Suppressive effect of preirradiation with blue light on near ultraviolet light induced conidiation in Alternaria tomato

1986 ◽  
Vol 64 (4) ◽  
pp. 896-899 ◽  
Author(s):  
Tadashi Kumagai

Conidiophore formation in Alternaria tomato (Cke.) Weber (ATCC 38852) was induced by irradiation with near ultraviolet light, and conidia formed in subsequent darkness. However, blue light applied before the inductive near ultraviolet radiation suppressed the induction. Preirradiation with blue light just before the inductive near ultraviolet radiation was most suppressive. An action spectrum for this suppression showed a peak around 447 nm, with a shoulder between 400 and 440 nm, a minor peak around 478 nm in the blue region, and another near 385 nm in the near ultraviolet region. This action spectrum is very similar to the ubiquitous blue light response (cryptochrome).




Mycoscience ◽  
2015 ◽  
Vol 56 (2) ◽  
pp. 177-182 ◽  
Author(s):  
Atsushi Kurahashi ◽  
Takafumi Shimoda ◽  
Masayuki Sato ◽  
Fumihiro Fujimori ◽  
Junji Hirama ◽  
...  


2009 ◽  
Vol 23 (4) ◽  
pp. 522-534 ◽  
Author(s):  
N. Tschowri ◽  
S. Busse ◽  
R. Hengge


2019 ◽  
Vol 71 (7) ◽  
pp. 2253-2269 ◽  
Author(s):  
Jack S A Matthews ◽  
Silvere Vialet-Chabrand ◽  
Tracy Lawson

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.





1999 ◽  
Vol 2 (4) ◽  
pp. 232-234 ◽  
Author(s):  
Sakae Agarie ◽  
Hideki Uchida ◽  
Waichi Agata ◽  
Peter B. Kaufman


1993 ◽  
Vol 88 (3) ◽  
pp. 453-459 ◽  
Author(s):  
Gerard Lasceve ◽  
Helene Gautier ◽  
Jocelyne Jappe ◽  
Alain Vavasseur




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