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缺磷胁迫下马尾松和杉木苗根系有机酸的分泌(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2007年02期
Page:
9-12
Column:
研究论文
publishdate:
2007-02-20

Article Info:/Info

Title:
Organic Acids Exudation from the Roots of Cunninghamia lanceolata and Pinus massoniana Seedlings Under Low Phosphorus Stress
Article ID:
1000-2006(2007)02-0009-04
Author(s):
YU Yuan-chun1 YU Jian2 FANG Li2 JIANG De-feng1
1. College of Forest Resources and Environmenl Nanjing Forestry University, Nanjing 210037, China; 2. College of National Territorial Resources and Tourism Anhui Normal University, Wuhu 241000, China
Keywords:
Low phosphorus stress Cunninghamia lanceolata Pinus rnassoniana Organic acids Root exudation
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2007.02.003
Document Code:
A
Abstract:
Organic acids exudation from the roots of Chinese fir (Cunninghamia Zanceolata) and Masson pine (Pinus massoniana) seedlings under low phosphorus stress was studied with solution culture method. The results revealed that organic acids exudation from the roots of Chinese fir and Masson pine seedlings under low phosphorus stress increased. Compared with P3(KH2PO4, 0.5 mmol/L), the average organic acids exudation from the root of Masson pine seedling under P, , (KH2PO4, 0 mmol/L), P~ (KH2PO4, 0.03 retool/L) and P2 (KH2PO4, 0.09 rnmol/L) increased 328.6~, 267.9~ and 126.40//00 respectively. Masson pine from Zhejiang province had the highest organic acids exudation. Under the low phosphorus stress, the kinds of increased organic acids exudation from the different provinces of Chinese fir and Masson pine were different. Masson pine from Zhejiang province mainly increased oxalic acid, tartaric acid, citric acid and malic acid exudation, from Guangxi Province mainly increased oxalic acid and tartaric acid exudation, from the Guizhou Province mainly increased oxalic acid, tartaric acid and malic acid exudation. Chinese fir mainly increased oxalic acid and tartaric acid exudation.

References

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Last Update: 2013-05-20