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Impaired leaf CO2 diffusion mediates Cd-induced inhibition of photosynthesis in the Zn/Cd hyperaccumulator Picris

Lu Tang1, Rong-Rong Ying, Dan Jiang

  • 1School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China.

Plant Physiology and Biochemistry : PPB
|October 1, 2013
PubMed

Keywords:
2-morpholinoethanesulfonic acidA(N)B(L), D(L), MC(L) and S(L)C(a) and C(i)CACO(2) mesophyll and stomatal conductances, respectivelyCadmium (Cd)Chlorophyll fluorescenceDDiffusional limitation (D(L))EE(x)F(m)F(o)F(s)F(v)/F(m)MESNPQPPPFDPSI and PSIIPhotosynthesisPicris divaricataROSStomataV(c,max)biochemical conductance, CO(2) diffusional conductance, mesophyll conductance and stomatal limitations, respectivelycarbonic anhydraseeffective quantum yield of photochemical energy conversion in actinic lightefficiency of open PSII centersfraction of absorbed light defines excess energyg(m) and g(s)in vivo maximum rate of Rubisco carboxylationlight fraction used for PSII photochemistrylight fraction used for heat dissipationmaximal fluorescence yield under illuminationmaximum fluorescence yieldmaximum quantum efficiency of PSII primary photochemistryminimal fluorescence yieldminimal fluorescence yield under illuminationnet photosynthetic ratenon-photochemical quenchingphotochemical quenching efficientphotosynthetic photon flux densityphotosystem I and photosystem II, respectivelyq(P)reactive oxygen speciesreference atmospheric and intercellular CO(2) concentrationssteady-state fluorescencetranspiration rateΦ(PSII)

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