Flexible and reversible responses to different irradiance levels during photosynthetic acclimation of Cypripedium guttatum

Zhang, Shi‐Bao; Hong, Hu; Xu, Kun; Li, Zhongrong; Yang, Yongping

doi:10.1016/j.jplph.2006.02.012

Cited by 43 publications

(37 citation statements)

References 29 publications

(41 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although the leaf A max of a widely distributed species like C. guttatum was greater than that of C. flavum when grown at 40-50% of full sunlight, g s in both species was comparable, and the latter species had a higher Chl area (Zhang et al 2006). Alternatively, when both were exposed to contrasting light conditions, their ability to adjust leaf structure and biochemistry under a given irradiance was very similar (Zhang et al 2007). Such properties thus may functionally contribute to coexisting species competing in a similar niche, e.g., by a compensatory effect of higher Chl area (Murchie and Horton 1997).…”

Section: Discussionmentioning

confidence: 99%

“…Different plants may have different sensitivity and responses to different light conditions, depending on their inherent light requirements. With Heptacodium miconioides, Liu et al (2006) indicated that leaf photosynthesis would be impaired by light intensities above 716 lmol m -2 s -1 , whereas this effect would not occur until approximately 1,000 lmol m -2 s -1 in Cypripedium guttatum (Zhang et al 2007). Such unfavorable traits, which can be exposed by changes in the environment, may explain distribution differences because they may cause loss of the ability to adjust and compete with other species, thereby resulting in a decline in the distribution range of a species (Gulías et al 2002).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Photosynthetic performance along a light gradient as related to leaf characteristics of a naturally occurring Cypripedium flavum

Zhang

Hong

et al. 2008

J Plant Res

Self Cite

View full text Add to dashboard Cite

Photosynthesis, leaf structure, nitrogen content and nitrogen allocation in photosynthetic functions of Cypripedium flavum were studied in a naturally varying light regime. Light-saturated leaf net photosynthetic rate (A max) was strongly correlated with leaf dry mass per area (LMA), mesophyll conductance (g (m)) and area-based leaf nitrogen content (N area), with all variables increasing with increasing irradiance. Such coordinate variation of all these parameters illustrates the plastic response of leaf structure to high light (HL). Leaf N area was greater under HL than in low light (LL). The fractions of leaf nitrogen partitioning in carboxylation (P (R)) and bioenergetics (P (B)) were positively related to LMA. In contrast, P (R) and P (B) decreased with increasing mass-based leaf nitrogen content (N mass). However, no correlation was found between leaf nitrogen investment in light harvesting (P (L)) and either LMA or N mass. Like maximum rate of carboxylation (V cmax) and electron transport (J max), the J max/V cmax ratio, which was strongly correlated to LMA, also increased significantly with irradiance. Under HL, leaf maximum photosynthetic nitrogen efficiency (ANUE) and intrinsic water use efficiency (WUE) were greater than in LL conditions, despite a small difference in WUE. This suggests that a functional balance in the photosynthetic machinery favors leaf photosynthetic plasticity of C. flavum in response to different light conditions. Given an ample soil nitrogen supply, C. flavum may offset its susceptibility to HL by efficient nitrogen use and higher stomatal and mesophyll conductance against photoinhibition so as to keep leaf photosynthesis positive.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photosynthetic performance along a light gradient as related to leaf characteristics of a naturally occurring Cypripedium flavum

Zhang

Hong

et al. 2008

J Plant Res

Self Cite

View full text Add to dashboard Cite

show abstract

“…This similarity can be explained by the fact that low irradiances of this curve corresponded to early morning and evening measurements, when no significant differences in chl a/b ratios between apical and basal leaves were found. However, the lower chl a/b ratio in basal leaves might also reflect a higher PSII/PSI ratio (Zhang et al 2007) to enhance absorption of the limited quantity of red light available in canopy shade and thus maintain the energy balance between PSII and PSI (Cai et al 2005).…”

Section: Discussionmentioning

confidence: 99%

“…sun and shade leaves, in the same plant in both woody plants (Araujo et al 2008) and grasses (Yamazaki et al 1999). In particular, compared to shade leaves, sun leaves have higher chlorophyll (chl) a to chl b and photosystem (PS)II to PSI ratios (Yamazaki et al 1999), lower chl/carotenoid ratio values (Lichtenthaler et al 2007), higher values for the capacity to dissipate excess energy (Baker 2008) and higher Rubisco content (Warren and Adams 2001) and photosynthetic capacity (Zhang et al 2007). All these aspects seem to reflect adaptations aimed at optimizing the use of light and avoiding harmful light stress.…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic performance of the aquatic macrophyte Althenia orientalis to solar radiation along its vertical stems

Conde-Álvarez¹,

Bañares‐España

Nieto-Caldera

et al. 2011

Oecologia

View full text Add to dashboard Cite

We have studied the plasticity of the photosynthetic apparatus in the endangered aquatic macrophyte Althenia orientalis to the gradient of light availability within its meadow canopy. We determined diurnal change in situ irradiance, light quality, in vivo chlorophyll a fluorescence, ex situ oxygen evolution rates, respiration rate and pigment concentration. The levels of photosynthetic photon flux density (PFD) and ultraviolet radiation (UVR) and the red/far-red ratio decreased with depth within the canopies of A. orientalis. Apical leaves had a greater decrease of the maximal quantum yield (F(v)/F(m)) in the morning and a faster recovery rate in the afternoon than those in the basal ones. The relative electron transport rate (ETRr) was not saturated at any time of the day, even in the apical leaves that received the highest light. The maximum light-saturated rate of gross photosynthesis (GP(max)) took place in apical leaves around noon. The chlorophyll a/b ratio values were higher, and the chlorophyll/carotenoid ratio values lower, in apical leaves than basal ones. The highest concentrations in total carotenoids were reached in the apical leaves around noon. A. orientalis has a high capacity to acclimatize to the changes in the light environment, both in quality and quantity, presenting sun and shade leaves in the same stem through the vertical gradient in the canopy.

show abstract

“…De acordo com Dixon et al (1990), a fotossíntese (A, de "Assimilation", em inglês) é um dos processos fisiológicos chave fundamentais na modelagem de aspectos de crescimento da árvore, e é utilizada como ferramenta para indicar condições de estresses causadas pelo ambiente e na seleção de condições de crescimento apropriadas para diferentes espécies (PASTENES et al, 2003;LIN;HSU, 2004;ZHANG et al, 2007).…”

Section: Introductionunclassified

Caracterização da capacidade fotossintética e da condutância estomática em sete clones comerciais de Eucalyptus e seus padrões de resposta ao déficit de pressão de vapor

Marrichi¹

View full text Add to dashboard Cite

Flexible and reversible responses to different irradiance levels during photosynthetic acclimation of Cypripedium guttatum

Cited by 43 publications

References 29 publications

Photosynthetic performance along a light gradient as related to leaf characteristics of a naturally occurring Cypripedium flavum

Photosynthetic performance along a light gradient as related to leaf characteristics of a naturally occurring Cypripedium flavum

Photosynthetic performance of the aquatic macrophyte Althenia orientalis to solar radiation along its vertical stems

Caracterização da capacidade fotossintética e da condutância estomática em sete clones comerciais de Eucalyptus e seus padrões de resposta ao déficit de pressão de vapor

Contact Info

Product

Resources

About