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- Title
Influence of Low Phosphorus Stress on Glucose Metabolism and Nutrition Accumulation in Tobacco Yunyan 87.
- Authors
JIA Hong-fang; YIN Gui-ning; HUANG Hua-gang; LIU Wei-zhi; LIU Guo-shun; CUI Hong
- Abstract
In order to elucidate the influence of deficient phosphorus stress on tobacco glucose metabolism and nutrition uptake, Shapei test was designed with T1 ( 1 mmol/L Pi ) and T2 ( 0 .1 mmol/L Pi ) treatments taking Yunyan 87 as experiment material. The contents of sugar, starch, nutritional elements at different parts of tobacco plant, and the activities of sugar metabolism related enzymes were detected under deficient phosphorus stress. Besides, the key sugar metabolism genes ( SUTl, INV, AGPase ) and the expression differences of high affinity nutrients transport protein family genes ( PT1, PT2, HAKİ, IRT1 ) were also analyzed. The results showed that starch and sugar contents increased remarkably in roots and above-ground parts under Pi deficiency condition. Under deficient phosphorus stress the contents of K and Fe increased in tobaco roots and above-ground parts, Mg content reduced. But there was not much difference in Ca content. K and Fe accumulation might be caused by the increase quantity of high affinity potassium transporters ( HAKİ ) and Iron regulate transporter genes ( IRT1 ) . This study has provided theoretical basis for studying the interaction between phosphorus and other nutrient elements in plants.
- Subjects
PHOSPHORUS in agriculture; TOBACCO research; PLANT nutrition research; GENETIC research; PLANT genetics; POTASSIUM in agriculture
- Publication
Journal of Agricultural Science & Technology (1008-0864), 2014, Vol 16, Issue 3, p36
- ISSN
1008-0864
- Publication type
Article
- DOI
10.13304/j.nykjdb.2013.648