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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Diversity of non-structural carbohydrates in grasses (Poaceae) from Brazil

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Author(s):
Moraes, M. G. [1] ; Chatterton, N. J. [2] ; Harrison, P. A. [2] ; Filgueiras, T. S. [3] ; Figueiredo-Ribeiro, R. C. L. [4]
Total Authors: 5
Affiliation:
[1] Univ Fed Goias, Inst Ciencias Biol, BR-74001970 Goiania, Go - Brazil
[2] ARS, Forage & Range Res Lab, USDA, Logan, UT - USA
[3] 3 Herbarium Maria Eneyda P Kauffman Fidalgo Inst, Sao Paulo - Brazil
[4] Inst Bot, Nucleo Fisiol & Bioquim Plantas 4, Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: GRASS AND FORAGE SCIENCE; v. 68, n. 1, p. 165-177, MAR 2013.
Web of Science Citations: 11
Abstract

Non-structural carbohydrates (NSC) are the primary energy available for growth and dry-mass production in forage grasses. They are also associated with tolerance to environmental stresses, including drought. Soluble carbohydrates, especially fructans of temperate forage grasses, have been extensively studied; however, little is known about NSC of tropical grasses. These plants are abundant in the Cerrado, a savanna-like vegetation with a definite seasonality in rainfall distribution. Such an environment presents an ideal condition for the occurrence of fructans. However, the present analysis of carbohydrates in aerial parts of twenty-four tropical grass species, mainly from the Panicoideae subfamily in the Cerrado, shows a distinctively different NSC profile when compared with temperate grasses. Free glucose and starch are common NSC found in most plant organs. However, free fructose and sucrose-based oligosaccharides were only found in very low amounts. Sucrose was detected in higher amounts only in stems. A linear series of malto-oligosaccharides was found in leaf blades, sheaths and stems of most of the Cerrado grasses, except for those from the Andropogoneae tribe. These results indicate a diversity of regulatory pathways of NSC metabolism in tropical forage grasses from the Cerrado. (AU)

FAPESP's process: 00/06422-4 - Caesalpinia echinata Lam. (Brazil-wood): from seed to wood, a model for studies on tropical Brazilian trees
Grantee:Rita de Cassia Leone Figueiredo Ribeiro
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 05/04139-7 - Carbohydrates of tropical species as modulators of ecophysiological processes and as environmental stress response markers
Grantee:Marcia Regina Braga
Support Opportunities: Research Projects - Thematic Grants