ArticlePhotosynthesis research2022
Effect of enhanced UV-B radiation on growth and photosynthetic physiology of Iris tectorum maxim.
Article in Photosynthesis research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- UV-B Responsive Flavonoid Synthesis Contributes to Tartary Buckwheat High-Altitude Adaption.Plant biotechnology journal · 2025Article
- Effect of Pre-Sowing Seed Stimulation on Maize Seedling Vigour.International journal of molecular sciences · 2024Article
- Dissecting the genetic basis of UV-B responsive metabolites in rice.Genome biology · 2024Article
- UV-B induced flavonoid accumulation and related gene expression in blue- grained wheat at different periods of time.Frontiers in plant science · 2024Article
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Authors and funding
3 authors.
Funding
Abstract
Iris tectorum Maxim. is an important plant that plays a very crucial role in the ecological welfare of wetlands. In this study, the effects of different intensities of UV-B radiation on the growth, photosynthetic pigment content, chlorophyll fluorescence characteristics, chloroplast ultrastructure, and gas exchange parameters of Iris tectorum Maxim. were studied. The results showed that enhanced UV-B radiation had a significant influence on the above-mentioned parameters of iris. Compared with the control, enhanced UV-B radiation caused certain damage to the leaf appearance. With the increasing intensity of radiation, the apparent damage degree became more serious. Enhanced UV-B radiation significantly decreased leaf chlorophyll contents, and the effect accumulated with the exposure time. Enhanced UV-B radiation increased Fo, significantly increased the non-photochemical quenching coefficient NPQ, reduced PSII and Qp, and significantly decreased the Fm, Fv/Fm, and Fv/Fo in leaves. The effect of UV-B radiation on PSII destruction of Iris tectorum Maxim. increased as the radiation intensity increased and the exposure time prolonged. The chloroplast structure was damaged under the enhanced UV-B radiation. More specifically, thylakoid lamellae were distorted, swelling and even blurred, and a large number of starch granules appeared. The effect of the high intensity of radiation on chloroplast ultrastructure was greater than that of lower intensity. Enhanced UV-B radiation reduced significantly the net photosynthetic rate, stomatal conductance, and transpiration rate, and the degree of degradation increased with the increasing irradiation intensity. However, the intercellular CO
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