Physiological and growth responses of Populus davidiana ecotypes to different soil water contents

Zhang, X.; Wu, Ning; Li, Changliang

doi:10.1016/j.jaridenv.2004.07.008

Cited by 96 publications

(70 citation statements)

References 39 publications

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“…On the contrary, XN889, a dry climate cultivar cultivated in regions with a low rainfall during growing season, would be considered to have a high drought tolerance. Similar results were also reported for other plants (Zhang et al, 2005).…”

Section: Discussionsupporting

confidence: 91%

Leaf Growth, Gas Exchange and Chlorophyll Fluorescence Parameters in Response to Different Water Deficits in Wheat Cultivars

Bao

2011

Plant Production Science

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Section: Discussionsupporting

confidence: 91%

Leaf Growth, Gas Exchange and Chlorophyll Fluorescence Parameters in Response to Different Water Deficits in Wheat Cultivars

Bao

2011

Plant Production Science

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“…This may be due to the avoidance mechanism through adjustment of plant growth rate or decreased rate of photosynthesis. Reduction in terms of growth was obtained for many other plant species (ZHANG et al, 2005;YIN et al, 2005;XIAO et al, 2009). In this study, RWC in leaves decreased significantly.…”

Section: Discussionsupporting

confidence: 51%

Growth Characteristics, Physiological and Metabolic Responses of Teak (Tectona Grandis Linn. f.) Clones Differing in Rejuvenation Capacity Subjected to Drought Stress

Husen

2010

Silvae Genetica

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Summary Four-year old clones (FG1 and FG11) of teak (Tectona grandis Linn. f.), differing in rejuvenation capacity were grown in glazed earthenware pots. Drought treatments were imposed by withholding water for 20 days and rewatered to the field capacity daily for 5 days and the possible role of biochemical alteration and antioxidant metabolism in conferring photosynthetic capacity was determine by measuring photosynthetic traits, cellular damage and assaying activities of the superoxide dismutase (SOD) and peroxidase (PER) enzymes. Growth, relative water content (RWC), net photosynthetic rate (Pn), stomatal conductance (gs), chlorophyll fluorescence (Fv/Fm) and chlorophyll a, b, total chlorophyll and soluble protein content decreased significantly with increasing drought treatments from 5 to 20 days. Droughtinduced stress significantly increased the carotenoids content, relative electrolyte leakage and malondialdehyde (MDA) content, and, at the same time, accumulated free proline, free amino acid and soluble sugars in both clones. After re-watered to the field capacity daily for 5 days, both clones were shown significant recovery in the studied parameters. As compared with the FG11, the FG1 clone was more tolerant to drought as indicated by higher level of antioxidant enzyme activities as well as lower MDA content and electrolyte leakage. Similarly, drought stress caused less pronounced inhibition of Pn in FG1 than in FG11 clone. After re-hydration, the recovery was relatively quicker in FG1 than in FG11 clone. FG1 clone showed significant recovery in maximum quantum yield or photochemical efficiency of PSII (Fv/Fm) after 5 days of re-watering. The FG11 compared to the FG1, the former clone was less tolerant to drought than the latter. These results demonstrated that the different physiological strategies including antioxidative enzymes employed by the FG1 and FG11 clones of T. grandis to protect photosynthetic apparatus and alleviate drought stress. Furthermore, this study also provides ideas for teak improvement programmes and may be useful in breeding or genetic engineering for their tolerance to drought stress.

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“…Studies have found that plants growing under different climatic conditions can adapt to local climate and evolve genetically stable variation in morphological and physiological characteristics (Abd El Rahman and Krzywinski 2008;Zhang et al 2005). An extreme example is certain plant species in arid regions showing correspondingly small and thick leaves and extremely low transpiration rates (Ma et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Role of transpiration in arsenic accumulation of hyperaccumulator Pteris vittata L.

Wan

Lei

Chen

et al. 2015

Environ Sci Pollut Res

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A b s t r a c t M e c h a n i s m s o f P t e r i s v i t t a t a L . t o hyperaccumulate arsenic (As), especially the efficient translocation of As from rhizoids to fronds, are not clear yet. The present study aims to investigate the role of transpiration in the accumulation of As from the aspects of transpiration regulation and ecotypic difference. Results showed that As accumulation of P. vittata increased proportionally with an increase in the As exposure concentration. Lowering the transpiration rate by 28∼67 % decreased the shoot As concentration by 19∼56 %. Comparison of As distribution under normal treatment and shade treatment indicated that transpiration determines the distribution pattern of As in pinnae. In terms of the ecotypic difference, the P. vittata ecotype from moister and warmer habitat had 40 % higher transpiration and correspondingly 40 % higher shoot As concentration than the ecotype from drier and cooler habitat. Results disclosed that transpiration is the main driver for P. vittata to accumulate and redistribute As in pinnae.

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Physiological and growth responses of Populus davidiana ecotypes to different soil water contents

Cited by 96 publications

References 39 publications

Leaf Growth, Gas Exchange and Chlorophyll Fluorescence Parameters in Response to Different Water Deficits in Wheat Cultivars

Leaf Growth, Gas Exchange and Chlorophyll Fluorescence Parameters in Response to Different Water Deficits in Wheat Cultivars

Growth Characteristics, Physiological and Metabolic Responses of Teak (Tectona Grandis Linn. f.) Clones Differing in Rejuvenation Capacity Subjected to Drought Stress

Role of transpiration in arsenic accumulation of hyperaccumulator Pteris vittata L.

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