Full TGIF Record # 281325
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DOI:10.1093/aobpla/plu093
Web URL(s):https://academic.oup.com/aobpla/article/198894/Collaboration-between-grass-seedlings-and
    Last checked: 03/14/2017
Publication Type:
i
Refereed
Author(s):White, James F.; Chen, Qiang; Torres, Mónica S.; Mattera, Robert; Irizarry, Ivelisse; Tadych, Mariusz; Bergen, Marshall
Author Affiliation:Department of Plant Biology and Pathology, Rutgers University, New Brunswick, NJ
Title:Collaboration between grass seedlings and rhizobacteria to scavenge organic nitrogen in soils
Source:AoB Plants. Vol. 7, 2015, p. [1-13].
Publishing Information:Oxford, United Kingdom: Oxford Journals on behalf of the Annals of Botany Company
# of Pages:13
Keywords:TIC Keywords: Festuca arundinacea; Growth promoters; Lolium perenne; Microbiomes; Nitrogen efficiency; Poa annua; Rhizobacteria; Root growth; Symbiosis
Abstract/Contents:"Plants require nitrogen (N) to make proteins, nucleic acids and other biological molecules. It is widely accepted that plants absorb inorganic forms of N to fill their needs. However, recently it has become clear that plants also have the capacity to absorb organic N from soils. In this paper we describe a new kind of symbiosis involving seed-vectored rhizobacteria and grasses that is targeted at enhancing acquisition of organic N from soils. Our proposal is based on results of experiments on seedlings of grass species Festuca arundinacea Schreb., Lolium perenne L. and Poa annua L. that suggest: (i) seed-vectored rhizobacteria colonize seedling roots and influence their development; (ii) reactive oxygen secretion by seedling roots plays a role in organic N procurement by denaturing microbial proteins in the vicinity of roots (daytime activity); and (iii) plant root and microbial proteases degrade denatured proteins prior to absorption by roots (night-time activity). This research involved the following types of studies: (i) seedling root development experiments with and without rhizobacteria on a variety of substrates in agarose media and (ii) isotopic N-tracking experiments to evaluate the absorption into seedlings of N obtained from degradation of proteins. We hypothesize that grasses, in particular, are adapted to scavenge organic N from soils through application of this 'oxidative nitrogen scavenging' symbiosis with rhizobacteria, and their soil-permeating root systems. This newly discovered symbiosis in grass species could lead to new ways to cultivate and manage grasses to enhance efficiency of N utilization and reduce applications of inorganic fertilizers."
Language:English
References:28
Note:Pictures, color
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
White, J. F., Q. Chen, M. S. Torres, R. Mattera, I. Irizarry, M. Tadych, et al. 2015. Collaboration between grass seedlings and rhizobacteria to scavenge organic nitrogen in soils. AoB Plants. 7:p. [1-13].
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DOI: 10.1093/aobpla/plu093
Web URL(s):
https://academic.oup.com/aobpla/article/198894/Collaboration-between-grass-seedlings-and
    Last checked: 03/14/2017
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