Effect of Iron deficiency on phosphatase activity in the root of some Pistacia genotypes

Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

BIOCONF20_662

تاریخ نمایه سازی: 28 اردیبهشت 1398

Abstract:

Iron is an essential micronutrient for plants and plays critical roles in various physiological and biochemical processes such as photosynthesis and respiration. An imbalance between the solubility of iron in the rhizosphere and the demand for iron by root are the causes of iron deficiency in plants. Several metabolic changes have been described in Fe-deficient plants, including the accumulation of organic acids, shifts in the redox state of the cytoplasm, and changes in the activities of several enzymes in roots. Iron deficiency induces iron reductase activity in root but there isn‟t enough information about the role of iron deficiency in changing the activity of enzymes that participate in macro-element uptake. In present experiment, seedlings of ‛Beneh‟ (Pistacia mutica F. & M.), ‛Badami Riz Zarand‟ and ‛Sarakhs‟ (Pistacia vera L.) exposed to iron treatments (Epstein solution containing Iron or Epstein solution without iron) sand culture system and were quantified for alkaline phosphatase and acid phosphatase activity in roots. Results showed that in two wild Pistacia genotypes (P. mutica and ‛Sarakhs‟), iron deficiency induced a significant increase in acid phosphatase activity. A significant increment in the activity of acid phosphatase activity in roots of P. mutica and ‛ Badami Riz Zarand‟ (P. vera L.) were observed as a result of iron deficiency. Alkaline and acid phosphatase showed the similar response to iron deficiency in roots of P. mutica but the increase was greater in acid phosphatase activity. The changes observed in acid phosphatase and alkaline phosphatase in roots of Pistacia genotypes under iron deficiency suggest the role of iron in phosphorus assimilation under iron deficiency condition and the importance of genetic factors in response to iron deficiency in roots of Pistacia species.

Authors

Roya Nadi,

Department of Horticulture, Faculty of Agriculture, Khuzestan Agricultural and Natural Resources University, Mollasani, Khuzestan, Iran

Mokhtar Heidari

Department of Horticulture, Faculty of Agriculture, Khuzestan Agricultural and Natural Resources University, Mollasani, Khuzestan, Iran