March 2012
Ecophysiological responses of Melaleuca species to dual stresses of water logging and salinity
The combined effects of salinity and water logging on growth and ecophysiological characteristics of three Melaleuca species were investigated in a glasshouse study. Salinity treatments were imposed from day 28 at 0.3, 0.8, 2 and 5 g NaCl kg-1 soil. Shoot Na+ concentration and Na+/K+ratio for M. thyiodes at all salt level and of M. nesophila at 5.0 g NaCl...
March 2012
Acidity of tank bromeliad water in a cloud forest, Cusuco National Park, Honduras
Phytotelmata are plant-held water bodies housing complex aquatic invertebrate communities drawing attention for their suitability as breeding sites for disease bearing mosquitoes, and the unique fauna occurring in these habitats. Despite the human and scientific relevance, relatively little information is available on the water characteristics in these habitats and these scarce references consist only of isolated point...
March 2012
Cassava cyanocarbohydrate metabolism and proposed prehistoric symbionts
Plant/animal symbiosis produces interacting plant food parts that bear selective pressure to produce specific behaviors that aid the plant’s reproduction and/or survival. The cassava plant is here proposed to have created such a transactional food part in the cyanogenic carbohydrate tubers that acts through a sirtuin-activating pathway. The effect of exclusive cassava cyanocarbohydrate metabolism at the cellular...
March 2012
Protection against heat stress in wheat involves change in cell membrane stability, antioxidant enzymes, osmolyte, H2O2 and transcript of heat shock protein
Terminal heat stress causes an array of physiological, biochemical and morphological changes in plants, which affect plant growth and development. In present investigation, real time quantitative expression analysis of HSP90 gene in root showed a maximum of 2.5 fold increase in the transcript level during seed hardening stage. Similarly, in flag leaf 4.5, 4.3 and 6.5 fold increases in the transcript level were observed...
March 2012
Comparison of essential oil composition in wild and cultivated populations of Thymus pubescens Boiss. & Kotschy ex Celak. from Iran
Thymus pubescens Boiss. and Kotschy ex Celak. (Lamiaceae) is a grassy and permanent herb which grows wild in some regions of Iran including West Azarbaijan province. Content, composition and antioxidant activity of the essential oils of both wild populations and cultivated ones were compared in this study. The aerial parts of T. pubescens at the beginning of the flowering stage were collected...
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