Genomic Regulation of the Response of an Agroecosystem to Elements of Global Change

DeLucia, Evan, H.

关键词: ABUNDANCE;    ANTIOXIDANTS;    CAPACITY;    CARBOHYDRATES;    CARBON;    CELL WALL;    CHEMISTRY;    FLAVONOIDS;    GENES;    INDUCTION;    INSECTS;    LIGNIN;    METABOLISM;    POLYSACCHARIDES;    PROTEINS;    REGULATIONS;    SOYBEANS;    SYNTHESIS;   

DOI  :  10.2172/1015619
RP-ID  :  DOE ER63849
PID  :  OSTI ID: 1015619
Others  :  Other: A6406
Others  :  TRN: US201206%%352

学科分类：燃料技术

美国|英语

来源: SciTech Connect

【 摘 要 】

This document outlines some of the major accomplishments from this project: (1) New tools for analyzing and visualizing microarray data from soybean gene expression experiments; (2) Physiological, biochemical, and gene array evidence that acclimation of carbon metabolism to elevated CO{sub 2} is governed in significant part by changes in gene expression associated with respiratory metabolism; (3) Increased carbon assimilation in soybeans grown at elevated CO{sub 2} altered pools of carbohydrates and transcripts that control growth and expansion of young leaves; (4) Growth at elevated CO{sub 2} increases the abundance of transcripts controlling cell wall polysaccharide synthesis but not transcripts controlling lignin synthesis; (5) The total antioxidant capacity of soybeans varies among cultivars and in response to atmospheric change; (6) Accelerated leaf senescence at elevated O{sub 3} coincides with reduced abundance of transcripts controlling protein synthesis; (7) Growth under elevated CO{sub 2} increases the susceptibility of soybean to insect herbivores by increasing insect lifespan and fecundity through altered leaf chemistry and by defeating molecular induction of plant defenses; (8) Exposure to elevated CO{sub 2} and O{sub 3} alters flavonoid metabolism in soybean; (9) Exposure to elevated CO{sub 2} or O{sub 3} conferred resistance to soybean mosaic virus by cross inducing defense- and stress-related signaling pathways; and (10) Exposure to elevated CO{sub 2} accelerates decomposition by changing chemical and biotic properties of the soil.