+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Influence of 5 methyltryptophan resistant bradyrhizobium japonicum on soybean root nodule iaa content



Influence of 5 methyltryptophan resistant bradyrhizobium japonicum on soybean root nodule iaa content



Applied & Environmental Microbiology 53(5): 1051-1055



Bradyrhizobium japonicum mutants resistant to 5-methyltryptophan were isolated. Some of these mutants were found to accumulate indole-3-acetic acid (IAA) and tryptophan in culture. In greenhouse studies, nodules from control plants inoculated with wild-type bradyhizobia contained 0.04, 0.10, and 0.58 .mu.g of free, ester-linked, and peptidyl IAA g (fresh weight) of nodules-1, respectively. Nodules from plants inoculated with 5-methyltryptophan-resistant bradyrhizobia contained 0.94. 1.30, and 10.6 .mu.g of free, ester-linked, and peptidyl IAA g (fresh weight) of nodules-1, respectively. This increase in nodule IAA content indicates that the Bradyrhizobium inoculum can have a considerable influence on the endogenous IAA level of the nodule. Further, these data imply that much of the IAA that accumulated in the high-IAA-containing nodules was of bacterial rather than plant origin. These high-IAA-producing 5-menthyltryptophan-resistant bacteria were poor symbiotic nitrogen fixers. Plants inoculated with these bacteria had a lower nodule mass and fixed less nitrogen per gram of nodule than did plants inoculated with wild-type bacteria.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 005679273

Download citation: RISBibTeXText


Related references

Influence of 5-Methyltryptophan-Resistant Bradyrhizobium japonicum on Soybean Root Nodule Indole-3-Acetic Acid Content. Applied and Environmental Microbiology 53(5): 1051-1055, 1987

Utilization of nitrate by bacteroids of Bradyrhizobium japonicum in the soybean root nodule. Planta 174(1): 51-58, 1988

Bradyrhizobium japonicum genes involved in soybean root-nodule development. Recognition in microbe plant symbiotic and pathogenic interactions edited by Ben Lugtenberg: 6, 1986

Bradyrhizobium japonicum genes involved in soybean root nodule development. Lugtenberg, B. Nato Asi (advanced Science Institutes) Series, Series H: Cell Biology, Vol. 4. Recognition In Microbe-Plant Symbiotic And Pathogenic Interactions; Nato Advanced Research Workshop, Biddinghuizen, Netherlands, May 11-16, . Xiii 449p. Springer-Verlag New York, Inc: Secaucus, New Jersey, Usa; Berlin, West Germany. Illus. 79-86, 1986, 1987

Root exudate treatment enhances soybean nodule occupancy by bradyrhizobium japonicum. Abstracts of the Annual Meeting of the American Society for Microbiology 86: 243, 1986

Bacterial genes involved in the communication between soybean and its root nodule symbiont, Bradyrhizobium japonicum. NATO ASI series: Series H: Cell biology6(36): 295-301, 1989

Bradyrhizobium japonicum Inoculant Mobility, Nodule Occupancy, and Acetylene Reduction in the Soybean Root System. Applied and Environmental Microbiology 55(10): 2493-2498, 1989

Preincubation of Bradyrhizobium japonicum with Genistein Accelerates Nodule Development of Soybean at Suboptimal Root Zone Temperatures. Plant Physiology 108(3): 961-968, 1995

Induction of root hair and nodule primordia on soybean and vigna by the Nod signals LCOs extracted from Bradyrhizobium japonicum. Annals of Agricultural Science, Moshtohor 43(4): 1441-1449, 2005

Characterization of three soluble c-type cytochromes isolated from soybean root nodule bacteroids of Bradyrhizobium japonicum strain CC705. Fems Microbiology Letters 67(2): 137-144, 1991

Symbiotic properties of 5 methyltryptophan resistant bradyrhizobium japonicum mutants. Abstracts of the General Meeting of the American Society for Microbiology 91: 256, 1991

The symbiotic effectiveness of 5-methyltryptophan resistant mutants of Bradyrhizobium japonicum. Palacios, R, Mora, J, Newton, W E Current Plant Science and Biotechnology in Agriculture; New horizons in nitrogen fixation 727, 1993

Symbiotic properties of 5-methyltryptophan-resistant mutants of Bradyrhizobium japonicum. Plant & Soil 173(2): 293-298, 1995

Increased symbiotic nodulation and nitrogen fixation by a 5 methyltryptophan resistant bradyrhizobium japonicum. Plant Physiology 86(4 SUPPL): 144, 1988

Positive correlation between the number of root nodule primordia and seed sugar secretion in soybean (Glycine max L.) seedlings inoculated with a low density of Bradyrhizobium japonicum. Soil Science and Plant Nutrition 48(2): 219-225, 2002