Bi-directional acclimation of Cycas micronesica leaves to abrupt changes in incident light in understory and open habitats

Title:

Bi-directional acclimation of Cycas micronesica leaves to abrupt changes in incident light in understory and open habitats

Creator:

Marler, T. E.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:c4d14eac-ffab-4d39-88ee-bac395779730
uuid:c4d14eac-ffab-4d39-88ee-bac395779730
issn:0300-3604
doi:10.1007/s11099-017-0730-3

Subject:

dynamická fotosyntéza listů, kolísající světlo, fenotypová plasticita, fotosyntetická indukce, cykad, dynamic leaf photosynthesis, fluctuating light, phenotypic plasticity, photosynthetic induction, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Leaf gas-exchange responses to shadefleck-sunfleck and sun-cloud transitions were determined for in situ Cycas micronesica K.D. Hill plants on the island of Guam to add cycads to the published gymnosperm data. Sequential sunfleck-shadefleck transitions indicated understory leaves primed rapidly but open field leaves primed slowly. Time needed to reach 90% induction of net CO2 assimilation (PN) was 2.9 min for understory leaves and 13.9 min for open field leaves. Leaf responses to sun-cloud transitions exhibited minimal adjustment of stomatal conductance, so PN rapidly returned to precloud values following cloud-sun transitions. Results indicate bi-directional leaf acclimation behavior enables mature C. micronesica trees to thrive in deep understory conditions in some habitats and as emergent canopy trees in other habitats. These data are the first nonconifer gymnosperm data; the speed of gas-exchange responses to rapid light transitions was similar to some of the most rapid angiosperm species described in the literature., T. E. Marler., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

776-785

Source:

Photosynthetica | 2018 Volume:56 | Number:3

Harvested from:

CDK

Metadata only:

false