Characterization of the Allelopathic Potential of Sugarcane Leaves and Roots  

作　　者：Neriane Hijano Mariluce P. Nepomuceno Charles L. Cantrell Stephen O. Duke Pedro L. C. A. Alves Neriane Hijano;Mariluce P. Nepomuceno;Charles L. Cantrell;Stephen O. Duke;Pedro L. C. A. Alves(Department of Biology Applied to Agriculture, School of Agricultural and Veterinarian Sciences, Sao Paulo State University (UNESP), Jaboticabal, Brazil;Natural Products Utilization Research Unit, Agricultural Research Service, United State Department of Agriculture, University, Mississippi, USA;National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi, USA)

机构地区：[1]Department of Biology Applied to Agriculture, School of Agricultural and Veterinarian Sciences, Sao Paulo State University (UNESP), Jaboticabal, Brazil [2]Natural Products Utilization Research Unit, Agricultural Research Service, United State Department of Agriculture, University, Mississippi, USA [3]National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi, USA

出　　处：《Journal of Agricultural Chemistry and Environment》2021年第3期257-274,共18页农业化学和环境（英文）

摘　　要：Sugarcane cultivars that are currently planted are the result of genetic improvement focused on increased crop yield. However, this selection and genetic alteration reduced the competitive potential of sugarcane, as well as its allelopathic capabilities. Many members of the Poaceae family are highly allelopathic. Thus, the objective of this study was to characterize the allelopathic potential of two sugarcane cultivars (CTC 2 and IAC 91109) by bioassay-guided fractionation, isolation, and identification of significant phytotoxins, including those that are lipophilic. For both leaves and roots, alpha-linolenic and linoleic acid were found to be the most phytotoxic compounds found with this approach. Both compounds were phytotoxic when applied in soil and caused light-independent cellular leakage of treated cucumber cotyledon discs. We conclude that some of the phytotoxic effects of sugarcane residues in soil are due to the combined action of alpha-linolenic and linoleic acid.Sugarcane cultivars that are currently planted are the result of genetic improvement focused on increased crop yield. However, this selection and genetic alteration reduced the competitive potential of sugarcane, as well as its allelopathic capabilities. Many members of the Poaceae family are highly allelopathic. Thus, the objective of this study was to characterize the allelopathic potential of two sugarcane cultivars (CTC 2 and IAC 91109) by bioassay-guided fractionation, isolation, and identification of significant phytotoxins, including those that are lipophilic. For both leaves and roots, alpha-linolenic and linoleic acid were found to be the most phytotoxic compounds found with this approach. Both compounds were phytotoxic when applied in soil and caused light-independent cellular leakage of treated cucumber cotyledon discs. We conclude that some of the phytotoxic effects of sugarcane residues in soil are due to the combined action of alpha-linolenic and linoleic acid.

关 键 词：Fatty Acid ALLELOCHEMICAL Alpha-Linolenic Acid Linoleic Acid BIOASSAY WEED 

分 类 号：S51[农业科学—作物学]