Study of interactions drought stress and Pb in growth factors and water content on Matthiola flavida Boiss under drought stress

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 254

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شناسه ملی سند علمی:

BIOCONF20_754

تاریخ نمایه سازی: 28 اردیبهشت 1398

چکیده مقاله:

The metallophyte plant of Matthiola falavida, a perennial species belonging to the Brassicaceae family, is grown in the central regions of Iran. This plant grows in Pb/Zn minerals containing soil in the center of Iran (Irankouh), and is known as a Pb aggregator. Drought is one of the limiting factors in the central regions of Iran. In order to better understand the effect of Pb on drought tolerance of metallophyte plants in mineral soils, an experiment was conducted in hydroponic conditions in a completely randomized design with a factorial arrangement with three replications. The effect of Pb on growth and water content of Matthiola falavida plant studied under drought stress.Pots containing 45-day-old seedlings were placed in a Hoagland solution of ½strength for 7 days in different concentrations (0, 75, 150, 300 and 500ppm) of Pb. To avoid sedimentation of elements with lead, Hoagland solution was used without phosphate and iron. Then half of the pots were kept in polyethylene glycol drought stress (PEG: 0.6 MPA) for 7 days. The results showed that low concentrations of Pb could improve growth, but increased Pb concentration reduced the growth of shoot and root organs. Improvement of the growth and water content of the plant in low Pb concentrates, indicating the internal resistance of this plant to Pb that probably occurred with an accumulation of osmoticums. In conclusion, low concentrations of Pb alleviate Matthiola falavida growth under drought stress.

نویسندگان

Mina Shahbazi Gahruei

Department of Biology, Faculty of Sciences, University of Isfahan, Isfahan ۸۱۷۴۶-۷۳۴۴۱, Iran.

Seyed Majid Ghaderian

Department of Biology, Faculty of Sciences, University of Isfahan, Isfahan ۸۱۷۴۶-۷۳۴۴۱, Iran.

Behrooz Salehi Eskandari

Department of Biology, Payame Noor University, ۱۹۳۹۵-۳۶۹۷ Tehran, Iran