Contributions of cryptochromes and phototropins to stomatal opening through the day
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 p...
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2020wang.pdf LINK AL EDITOR |
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| 245 | 1 | 0 | |a Contributions of cryptochromes and phototropins to stomatal opening through the day |
| 520 | |a 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 μmol m–2 s–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. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | |a ARABIDOPSIS THALIANA | ||
| 653 | |a BLUE LIGHT | ||
| 653 | |a DIURNAL PATTERN | ||
| 653 | |a GAS EXCHANGE | ||
| 653 | |a GREEN LIGHT | ||
| 653 | |a PHOTOSYNTHESIS | ||
| 653 | |a RED LIGHT | ||
| 653 | |a STOMATA | ||
| 700 | 1 | |a Wang, Fang |u University of Helsinki. Faculty of Biological and Environmental Sciences. Plant Science Centre (ViPS), Organismal and Evolutionary Biology (OEB). Helsinki, Finland. |9 72454 | |
| 700 | 1 | |a Robson, T. Matthew |u University of Helsinki. Faculty of Biological and Environmental Sciences. Plant Science Centre (ViPS), Organismal and Evolutionary Biology (OEB). Helsinki, Finland. |9 68758 | |
| 700 | 1 | |9 792 |a Casal, Jorge José |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u CONICET. Fundación Instituto Leloir. Buenos Aires, Argentina. | |
| 700 | 1 | |a Shapiguzov, Alexey |u University of Helsinki. Faculty of Biological and Environmental Sciences. Plant Science Centre (ViPS), Organismal and Evolutionary Biology (OEB). Helsinki, Finland. |u Russian Academy of Sciences of Plant Physiology. Institute of Plant Physiology. Moscow, Russia. |9 72455 | |
| 700 | |a Aphalo, Pedro José |u University of Helsinki. Faculty of Biological and Environmental Sciences. Plant Science Centre (ViPS), Organismal and Evolutionary Biology (OEB). Helsinki, Finland. |9 722 | ||
| 773 | |t Functional Plant Biology |g Vol.47, no.3 (2020), p.226-238, tbls., grafs. | ||
| 856 | |f 2020wang |i En reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2020wang.pdf |x ARTI202103 | ||
| 856 | |u http://www.publish.csiro.au/ |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||