Alleviation of drought stress in Phyllostachys edulis by N and P application
| Autor: | Zhi Zhuang Wu, Yuan Bin Zhang, Xu Hua Du, An Ke Wang, Yu Fang Bi, Ye Qing Ying |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Chloroplasts Nitrogen Drought tolerance lcsh:Medicine chemistry.chemical_element Poaceae Photosynthesis 01 natural sciences Article Phosphorus metabolism Soil Nutrient Stress Physiological Biomass Water-use efficiency lcsh:Science Chlorophyll fluorescence Multidisciplinary biology Chemistry Phosphorus lcsh:R Water Pigments Biological 04 agricultural and veterinary sciences biology.organism_classification Droughts Horticulture Phyllostachys edulis 040103 agronomy & agriculture 0401 agriculture forestry and fisheries lcsh:Q 010606 plant biology & botany |
| Zdroj: | Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018) Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-017-18609-y |
| Popis: | The aim of this study was to explore whether nutrition supply can improve the drought tolerance of Moso bamboo under dry conditions. One-year-old seedlings were exposed to two soil water content levels [wellwatered, 70 ± 5% soil-relative-water-content (SRWC) and drought stress, 30 ± 5% SRWC] and four combinations of nitrogen (N) and phosphorus (P) supply (low-N, low-P, LNLP; low-N, high-P, LNHP; high-N, high-P, HNHP; and high-N, low-P, HNLP) for four months. Plant growth, photosynthesis, chlorophyll fluorescence, water use efficiency and cell membrane stability were determined. The results showed that drought stress significantly decreased total biomass, net-photosynthesis (Pn), stomatal-conductance (gs), leaf-chlorophyll-content (Chlleaf), PSII-quantum-yield (ΦPSII), maximum-quantum-yield-of-photosynthesis (Fv/Fm), photochemical-quenching-coefficient (qP), leaf-instantaneous-water-use efficiency (WUEi), relative-water-content (RWC), photosynthetic-N-use-efficiency (PNUE), and photosynthetic-P-use-efficiency (PPUE). N and P application was found to be effective in enhancing the concentration of leaf N, gs, and Pn while reducing the production of reactive oxygen species under both water regimes. Under LNHP, HNHP and HNLP treatments, the decreases in total biomass, Pn, Chlleaf and Fv/Fm of drought-stressed were less evident than the decreases under LNLP. The study suggests that nutrient application has the potential to mitigate the drastic effects of water stress on Moso bamboo by improving photosynthetic rate, water-use efficiency, and increasing of membrane integrity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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