חיפוש מתקדם
Physiologia Plantarum
Porat, R., Kennedy-Leigh Centre for Horticulture Research, Faculty of Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-100, Israel
Reiss, N., Kennedy-Leigh Centre for Horticulture Research, Faculty of Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-100, Israel
Atzorn, R., Inst, of Plant Biochemistry, P.O. Box 250, Saale, Halle, D-06018, Germany
Halevy, A.H., Kennedy-Leigh Centre for Horticulture Research, Faculty of Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-100, Israel
Borochov, A., Kennedy-Leigh Centre for Horticulture Research, Faculty of Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-100, Israel
Application of linoleic and linolenic acids to Phalaenopsis and Dendrobium flowers enhanced their senescence and promoted ethylene production. This effect was specific to unsaturated fatty acids which serve as substrates for lipoxygenase action, and did not occur following similar treatments with saturated fatty acids. Several major lipoxygenase pathway metabolites including jasmonic acid methyl ester, traumatic acid, trans‐2‐hexenal and cis‐3‐hexenol also enhanced flower senescence. Jasmonic acid methyl ester promoted ethylene production by Phalaenopsis flowers. In contrast, treating flowers with the lipoxygenase inhibitors salicylhydroxamic acid and n‐propyl gallate. which inhibite(d) lipoxygenase activity in vitro, had no effect on pollination‐induced senescence of the flowers. Furthermore, during the 50‐h period following pollination, there was no increase in lipoxygenase activity in Phalaenopsis flowers. During the 10‐h period from pollination of Dendrobium flowers until the initiation of ethylene production, there was no effect of pollination on jasmonate levels in either the perianth or the columns. These results suggest that lipoxygenase activity and jasmonates are not directly involved in pollination‐induced Phalaenopsis and Dendrobium flower senescence. Copyright © 1995, Wiley Blackwell. All rights reserved
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Examination of the possible involvement of lipoxygenase and jasmonates in pollination‐induced senescence of Phalaenopsis and Dendrobium orchid flowers
94
Porat, R., Kennedy-Leigh Centre for Horticulture Research, Faculty of Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-100, Israel
Reiss, N., Kennedy-Leigh Centre for Horticulture Research, Faculty of Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-100, Israel
Atzorn, R., Inst, of Plant Biochemistry, P.O. Box 250, Saale, Halle, D-06018, Germany
Halevy, A.H., Kennedy-Leigh Centre for Horticulture Research, Faculty of Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-100, Israel
Borochov, A., Kennedy-Leigh Centre for Horticulture Research, Faculty of Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-100, Israel
Examination of the possible involvement of lipoxygenase and jasmonates in pollination‐induced senescence of Phalaenopsis and Dendrobium orchid flowers
Application of linoleic and linolenic acids to Phalaenopsis and Dendrobium flowers enhanced their senescence and promoted ethylene production. This effect was specific to unsaturated fatty acids which serve as substrates for lipoxygenase action, and did not occur following similar treatments with saturated fatty acids. Several major lipoxygenase pathway metabolites including jasmonic acid methyl ester, traumatic acid, trans‐2‐hexenal and cis‐3‐hexenol also enhanced flower senescence. Jasmonic acid methyl ester promoted ethylene production by Phalaenopsis flowers. In contrast, treating flowers with the lipoxygenase inhibitors salicylhydroxamic acid and n‐propyl gallate. which inhibite(d) lipoxygenase activity in vitro, had no effect on pollination‐induced senescence of the flowers. Furthermore, during the 50‐h period following pollination, there was no increase in lipoxygenase activity in Phalaenopsis flowers. During the 10‐h period from pollination of Dendrobium flowers until the initiation of ethylene production, there was no effect of pollination on jasmonate levels in either the perianth or the columns. These results suggest that lipoxygenase activity and jasmonates are not directly involved in pollination‐induced Phalaenopsis and Dendrobium flower senescence. Copyright © 1995, Wiley Blackwell. All rights reserved
Scientific Publication
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