000			03179nab|a22004217a|4500
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003			MX-TxCIM
005			20211217230116.0
008			211206s2014 xxu||||| |||| 00| 0 eng d
022			_a1932-6203 (Online)
024	8		_ahttps://doi.org/10.1371/journal.pone.0095031
040			_aMX-TxCIM
041			_aeng
100	0		_aXiang Gao _922836
245	1	0	_aRoot interactions in a maize/soybean intercropping system control soybean soil-borne disease, red crown rot
260			_aSan Francisco, CA (USA) : _bPublic Library of Science _c2014.
500			_aPeer review
500			_aOpen Access
520			_aBackground: Within-field multiple crop species intercropping is well documented and used for disease control, but the underlying mechanisms are still unclear. As roots are the primary organ for perceiving signals in the soil from neighboring plants, root behavior may play an important role in soil-borne disease control. Principal Findings: In two years of field experiments, maize/soybean intercropping suppressed the occurrence of soybean red crown rot, a severe soil-borne disease caused by Cylindrocladium parasiticum (C. parasiticum). The suppressive effects decreased with increasing distance between intercropped plants under both low P and high P supply, suggesting that root interactions play a significant role independent of nutrient status. Further detailed quantitative studies revealed that the diversity and intensity of root interactions altered the expression of important soybean PR genes, as well as, the activity of corresponding enzymes in both P treatments. Furthermore, 5 phenolic acids were detected in root exudates of maize/soybean intercropped plants. Among these phenolic acids, cinnamic acid was released in significantly greater concentrations when intercropped maize with soybean compared to either crop grown in monoculture, and this spike in cinnamic acid was found dramatically constrain C. parasiticum growth in vitro. Conclusions: To the best of our knowledge, this study is the first report to demonstrate that intercropping with maize can promote resistance in soybean to red crown rot in a root-dependent manner. This supports the point that intercropping may be an efficient ecological strategy to control soil-borne plant disease and should be incorporated in sustainable agricultural management practices.
546			_aText in English
650		7	_aIntercropping _2AGROVOC _96135
650		7	_aRoots _2AGROVOC _91755
650			_aSoil-borne organisms _2AGROVOC _926003
650		7	_aPlant diseases _2AGROVOC _91206
650		7	_aParasitoses _2AGROVOC _95168
650		7	_aMaize _2AGROVOC _91173
650		7	_aSoybeans _2AGROVOC _93639
700	0		_aXiang Gao _922836
700	0		_aMan Wu _926004
700	0		_aRuineng Xu _92729
700	0		_aXiurong Wang _926005
700	0		_aRuqian Pan _926006
700	0		_aHye-Ji Kim _926007
700	0		_aHong Liao _92732
773	0		_tPLoS ONE _gv. 9, no. 5, e95031 _dSan Francisco, CA (USA) : Public Library of Science, 2014. _x1932-6203 _wG94957
856	4		_yClick here to access online _uhttps://doi.org/10.1371/journal.pone.0095031
942			_cJA _n0 _2ddc
999			_c64721 _d64713