A STRESS TOLERANT SPHINGOMONAS FROM TRANSHIMALAYAN RHIZOSPHERIC SOIL IMPROVES GROWTH OF TOMATOD. DOLKAR, P. DOLKAR, O.P. CHAURASIA AND T. STOBDAN
A temperature-, pH- and salt-tolerant Sphingomon as a quatilis PS10 was isolated from Sea buckthorn (Hippophae rhamnoides L.) rhizosp here growing in the Indian trans-Himalaya. PS10 was capable of solubilizing insoluble inorganic phosphate under different stress conditions viz. 440°C, 1 5% salt concentration and pH 412 range. The isolate exhibit plant growth promoting traits viz. auxin, siderophore and hydrogen cyanide production. Tomato seed bacterization resulted in 37% and 34.5% increased in shoot and root length, respectively. Inoculations of tomato seedling with PS10 promote plant growth in pot trial experiments. Increased in fruit yield due to PS10 treatment was 10.4% and 33% over controls in open and shade net conditions, respectively. The result of this study provides a strong basis for further development of this isolate as a bioinoculants in horticultural crops in high altitude regions.
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