Autotoxicity of root exudates from taro

Asao, Toshiki; Hasegawa, K.; Sueda, Yukio; Tomita, Kouhei; Taniguchi, Kohei; Hosoki, Takashi; Pramanik, M. H. R.; Matsui, Yoshihisa

doi:10.1016/s0304-4238(02)00197-8

Cited by 71 publications

(43 citation statements)

References 6 publications

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“…Root exudation of adipic acid was reported in taro (Colocasia esculenta Schott) (Asao et al 2003) and silver birch (Betula pendula Roth) (Sandnes et al 2005). This compound inhibited the growth of taro plantlets.…”

Section: Discussion P Deficiency Enhanced Root Exudation In Soybean Pmentioning

confidence: 99%

Metabolite profiling of soybean root exudates under phosphorus deficiency

Tawaraya

Horie

Shinano

et al. 2014

Soil Science and Plant Nutrition

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Root exudates are derived from plant metabolites and their composition is affected by the plant nutritional status. The purpose of this study was to examine soybean root exudates under phosphorus (P) deficiency using a metabolite profiling technique. Glycine max L. (cv. Suzuyutaka) was grown in a culture solution at P concentrations of 0 (P0) and 8 (P8) mg P L −1 for 1, 5, 10 and 15 days after transplanting. Shoot extract, root extract and root exudates were collected and their metabolites were determined by capillary electrophoresis/ time-of-flight mass spectrometry (CE-TOF MS). The shoot P concentration and dry weight of soybean plants grown at P0 were lower than those at P8. One hundred and eight, 116 and 79 metabolites were identified in the shoot extract, root extract and root exudates, respectively. The concentrations of several metabolites including amino acids and organic acids in root exudates were higher at P0 than at P8, irrespective of the P concentration in the shoot or root extract. These findings suggest that soybean roots actively release metabolites in response to P deficiency.

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Section: Discussion P Deficiency Enhanced Root Exudation In Soybean Pmentioning

confidence: 99%

Metabolite profiling of soybean root exudates under phosphorus deficiency

Tawaraya

Horie

Shinano

et al. 2014

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

show abstract

“…Benzoic acid was also the main inhibitor of growth and yield in taro plants (Asao et al, 2003). The phenolic and aliphatic acids identified in strawberry root exudates may have the potential to inhibit growth.…”

Section: Phytotoxicity Of the Identified Chemicals In Root Exudates Omentioning

confidence: 95%

“…It leads to resurgence of disease pest, exhaustion of soil fertility, and developing chemical interference in the rhizosphere referring allelopathy (Hegde & Miller, 1990;Komada, 1988;Takahashi, 1984;Young, 1984). Allelopathic effects from crop residues and root exudates have extensively studied in vegetable crops such as in alfalfa (Miller, 1983;Nakahisa et al, 1993Nakahisa et al, , 1994Chon et al, 2002, Chung et al, 2011, asparagus (Young, 1984;Young & Chou, 1985;Hartung et al, 1990), cucumber (Yu & Matsui, 1994, 1997, watermelon (Kushima et al, 1998;Hao et al, 2007), taro (Asao et al, 2003), strawberry (Kitazawa et al, 2005), tomato (Yu & Matsui, 1993b), lettuce (Lee et al, 2006) and so on. Therefore, growth of these plants found to be inhibited by the released allelochemicals.…”

Section: Autotoxicity From the Root Exudates Of Vegetables And Ornamementioning

confidence: 99%

“…Species differences in the susceptibility to autotoxicity among leaf vegetables were also investigated in hydroponics (Asao et al, 2001a). Autotoxicity of root exudates from taro were showed benzoic acid as the potent growth inhibitor (Asao et al, 2003). A number of aromatic organic acids were identified in several leaf vegetables (Asao et al, 2004b).…”

Section: Autotoxicity From the Root Exudates Of Vegetables And Ornamementioning

confidence: 99%

“…One of the principal causes of this growth inhibition in the successive culture of plants has been attributed to the effect of exuded chemicals from plants . Growth of some vegetables such as asparagus, taro, cucumber, and tomato was inhibited by allelochemicals found in their root exudates (Asao et al, 1998a(Asao et al, , 2003(Asao et al, , 2004bShafer & Garrison, 1986;Yang, 1982;Yu & Matsui, 1993). Inhibition in growth of apple, peach, rice, strawberry, and sugarcane has been documented for the autotoxicity (Kitazawa et al, 2005;Mizutani et al, 1988;Rice, 1984).…”

Section: Autotoxicity In Some Ornamental Plantsmentioning

confidence: 99%

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