English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Drought resistance of psammophyte determines survival and growth, but their responses to drought are not well understood. We conducted a pot experiment to study how physiological characteristics respond to drought and rehydration. We found that watering to 60–65% of field capacity (the control) provided more water than was required by  Agriophyllum squarrosum  and its leaves became yellow and slightly wilted. The total chlorophyll content and  F m (maximum fluorescence after dark adaptation) in control were lower than in the drought treatment, and both decreased after rehydration. With increasing drought duration and intensity, the relative water content (RWC), chlorophyll content,  F m, and the quantum efficiency of photosystem II ( F v/ F m) of  Setaria viridis  decreased, but malondialdehyde and membrane permeability increased. During the late drought, the activities of three antioxidant enzymes in  A. squarrosum  increased to prevent membrane lipid peroxidation; for  S. viridis , only peroxidase and superoxide dismutase activities increased. After rehydration, RWC of both species increased, but  F v/ F m of  A. squarrosum  and  F m of  S. viridis  did not recover under severe drought. Our research illustrated that  A. squarrosum  is better adapted to arid environment than  S. viridis,  but the high soil moisture content is not conducive to normal growth of  A. squarrosum .

Physiological responses of Agriophyllum squarrosum and Setaria viridis to drought and re-watering