Journal of Food, Agriculture and Environment
Vol 11,
Issue 3&4,2013
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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Biochemical indexes of saline-alkali soil affected by transgenic BADH soybean in Northeast China
Author(s):
Song Yu 1, 2,
Yi F. Zhang 1, 2, Jie Zhou 1, Jing X. Shao 1, 3, Han Gao 1, Yao Wang 1, Jue Zhang 1, Zhi H. Liu 1, Hong Y. Wang 1*Recieved Date: 2013-07-08, Accepted Date: 2013-10-03
Abstract:The gene of betaine aldehyde dehydrogenase (BADH) plays an important role in increasing plant resistance to stress. The transgenic crops carrying BADH gene enhance tolerance to stresses of saline-alkali and drought, however, these transgenic crops could have undesirable effects on natural and agro-ecosystems. We investigated the effect of soybean carrying BADH gene on several microbial and biochemical indicators in a saline-alkali agro-ecosystem. BADH-soybean variety SRTS and its non-transgenic near-isoline HN35 were grown on a soda-saline soil. Soil and root samples were collected at 30, 60, 90, 120, 150 days after sowing (DAS) and analysed for microbial biomass C, N and P (MBC, MBN, MBP), total organic carbon (TOC) and several soil enzyme activities. The microbial quotient (MQ) was calculated as the ratio of MBC-to-TOC. The results showed that the MBC, MBN and MQ from the soil planted with BADH-soybean were significantly higher than that of growing the non-transgenic soybean, while the TOC was similar for both transgenic and non-transgenic plants. Soil planted with BADH-soybean had higher potential N mineralisation, nitrification, nitrate reductase and acid phosphatase activities and lower alkaline phosphatase activity than the soil with non-BADH soybean. The root parameters including root length, volume and biomass weight were not significantly different (P>0.05) between the transgenic and non-transgenic soybeans at 30 DAS, but increased significantly in BADH-soybean thereafter. The root parameters were significantly affected by sampling times, and they reached to maximum value at 90 DAS. Results of this research suggest that cultivation of BADH-soybean in saline-alkali soil would have positive effects on some of soil biochemical indicators in the ecosystem.
Keywords:Saline-alkali soil,
biochemical indexes, transgenic BADH-soybean, microbial biomass, soil enzymesJournal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Environment
Pages: 2751-2756
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