在基质水胁迫下暴露的蓝细菌中海藻糖和蔗糖的积累。
Accumulation of trehalose and sucrose in cyanobacteria exposed to matric water stress.
机构信息
Division of Microbial and Molecular Ecology, Institute of Life Sciences, Hebrew University of Jerusalem, 91904 Jerusalem, Israel.
出版信息
Appl Environ Microbiol. 1991 Mar;57(3):645-8. doi: 10.1128/aem.57.3.645-648.1991.
Abstract
The drought-resistant cyanobacteria Phormidium autumnale, strain LPP(4), and a Chroococcidiopsis sp. accumulated trehalose, sucrose, and both trehalose and sucrose, respectively, in response to matric water stress. Accumulated sugar concentrations reached values of up to 6.2 mug of trehalose per mug of chlorophyll in P. autumnale, 6.9 mug of sucrose per mug of chlorophyll in LPP(4), and 4.1 mug of sucrose and 3.2 mug of trehalose per mug of chlorophyll in the Chroococcidiopsis sp. The same sugars were accumulated by these cyanobacteria in similar concentrations under osmotic water stress. Cyanobacteria that did not show drought resistance (Plectonema boryanum and Synechococcus strain PCC 7942) did not accumulate significant amounts of sugars when matric water stress was applied.
摘要
耐旱蓝藻 Phormidium autumnale 株系 LPP(4) 和一种 Chroococcidiopsis 属微生物分别在基质水胁迫下积累海藻糖、蔗糖以及同时积累海藻糖和蔗糖。在 P. autumnale 中，积累的糖浓度高达每微克叶绿素 6.2 微克海藻糖，在 LPP(4) 中，每微克叶绿素 6.9 微克蔗糖，在 Chroococcidiopsis 属微生物中，每微克叶绿素 4.1 微克蔗糖和 3.2 微克海藻糖。在渗透水胁迫下，这些蓝藻以相似的浓度积累相同的糖。不具有耐旱性的蓝藻（Plectonema boryanum 和 Synechococcus 株系 PCC 7942）在施加基质水胁迫时没有积累大量的糖。
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