การส่งเสริมการเจริญเติบโตของต้นกล้าข้าวดอกมะลิ 105 โดยแบคทีเรีย ที่ปลูกภายใต้สภาวะ ความเค็ม (Thai)

Soil salinity is a serious problem in rice cultivation causing plants to stop growing and resulting in reducing crop yields. One of the strategies to enable plants to tolerate saline soils is to use plant growth-promoting bacteria (PGPR). In this study, Pseudomonas putida ATCC 17484 was used to test the ability to produce siderophore, indole-3-acetic acid (IAA) and 1-aminocyclopropane-1-carboxylate deaminase (ACCD), in the broth media supplemented with 200-1,000 mM NaCl solution, and to evaluate the ability to promote the growth of rice plant (Oryza sativa L. cv. KDML105). The results showed that the bacteria produced siderophore, IAA and ACCD in the presence of 200-1000 mM of NaCl solution, under 5% (w/v) NaCl. It was found that P. putida ATCC 17484 could promote the growth of rice seedlings. The root length, shoot length, shoot fresh weight and shoot dry weight were higher than those of rice seedlings grown without bacteria. This study shows that this bacterium is a PGPR and can promote the growth of rice seedling in saline soil conditions. [ABSTRACT FROM AUTHOR]

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