期刊
3 BIOTECH
卷 7, 期 -, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s13205-017-0609-9
关键词
Arbuscular mycorrhiza; Phosphate transporter; Pi stress; Gene expression; Symbiosis
资金
- Department of Biotechnology, Ministry of Science and Technology, Government of India, New Delhi
- Startup Research Grant (Life Sciences) by Science and Engineering Research Board, Department of Science & Technology, Government of India [SB/FT/LS-104/2012]
Phosphorus (P) is a vital nutrient for plant growth and development, and is absorbed in cells with the help of membrane-spanning inorganic phosphate transporter (Pht) protein. Symbiosis with arbuscular mycorrhiza (AM) also helps in transporting P from the soil to plant and Pht proteins play an important role in it. To understand this phenomenon in Finger Mille plant, we have cloned four Pht genes from Finger millet, which shares the homology with Pht1 protein family of cereals. Expression pattern analysis during the AM infection indicated that EcPT4 genewasAMspecific, and its expression was higher in roots where AM colonization percentage was high. The expression level of EcPT1-4 gene under the phosphorous (Pi) stress in seedlings was found to be consistent with its role in acquisition of phosphorus. Homology study of the EcPt proteins with Pht proteins of cereals shows close relationship. The findings of the study indicate that Pht1 family genes from finger millet can serve to be an important resource for the better understanding of phosphorus use efficiency.
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