Quantify the response of purslane plant growth, photosynthesis pigments and photosystem II photochemistry to cadmium concentration gradients in the soil
- Авторлар: Yaghoubian Y.1, Siadat S.A.1, Moradi Telavat M.R.1, Pirdashti H.2
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Мекемелер:
- Department of Agronomy and Plant Breeding
- Department of Agronomy, Genetics and Agricultural Biotechnology Institute of Tabarestan
- Шығарылым: Том 63, № 1 (2016)
- Беттер: 77-84
- Бөлім: Research Papers
- URL: https://journal-vniispk.ru/1021-4437/article/view/178909
- DOI: https://doi.org/10.1134/S1021443716010180
- ID: 178909
Дәйексөз келтіру
Аннотация
The cadmium (Cd), being a widespread soils pollutant and one of the most toxic heavy metals in the environment, adversely affects sustainable crop production and food safety. Pot experiment was conducted to quantify and simulate the response of purslane (Portulaca oleracea L.) plants to Cd toxicity. The purslane germinated seeds were cultivated in twelve Cd concentrations (from 0 to 300 mg/kg of Cd in soil) for six weeks and then some growth characteristics, photosynthesis pigments, and chlorophyll a fluorescence parameters were measured. The influence of Cd gradients in the soil on all growth parameters, photosynthesis pigments and chlorophyll a fluorescence parameters (except Fm and carotenoid content) were described by a segmented model. Furthermore, Fm and carotenoid contents were fitted to a linear model. The growth characteristics, chlorophyll content, photosynthetic pigments and some parameters of chlorophyll a fluorescence such as Fv, Fv/Fm, Y(II) and ETR decreased when Cd concentration increased. In contrast, F0, Y(NPQ) and Y(NO) increased and Fm was not significantly affected. In general, most variations in the studied parameters were recorded with low concentrations of cadmium, which ranged from 0 to 125 mg/kg. Also, the growth characteristics (especially stem, leaf, and shoot dry weights) were more sensitive to Cd contamination than other parameters. Moreover, among chlorophyll fluorescence parameters, Y(NPQ) was the most sensitive to Cd concentration gradients in the soil that can be due to disturbances of antennae complex of PSII.
Негізгі сөздер
Авторлар туралы
Y. Yaghoubian
Department of Agronomy and Plant Breeding
Email: h.pirdashti@sanru.ac.ir
Иран, Ahvaz
S. Siadat
Department of Agronomy and Plant Breeding
Email: h.pirdashti@sanru.ac.ir
Иран, Ahvaz
M. Moradi Telavat
Department of Agronomy and Plant Breeding
Email: h.pirdashti@sanru.ac.ir
Иран, Ahvaz
H. Pirdashti
Department of Agronomy, Genetics and Agricultural Biotechnology Institute of Tabarestan
Хат алмасуға жауапты Автор.
Email: h.pirdashti@sanru.ac.ir
Иран, Sari
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