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Dynamic change of organic acids secreted from
wheat roots in Mn deficiency |
| FANG Zheng, AN Zhenfeng, LI Yingli |
| Key Laboratory of Bioinorganic Chemistry of Hebei Province, Agricultural University of Hebei; |
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Abstract Through solution culture experiment and liquid chromatogram technique, two wheat (Triticum aestivum L.) genotypes with different tolerances to Mn deficiency were used to study the dynamic change of organic acids secreted from wheat root in the conditions of no Mn, low Mn and normal Mn supply. Nine kinds of organic acids were measured in wheat root exudate. The results showed that there were significant differences of organic acids in root exudate between tolerant genotype and susceptible genotype under Mn-stressed conditions. Tolerant genotype 9023 secreted more organic acids from the plant roots than susceptible genotype CM28. The main organic acid exudate included tartaric acid, malic acid, acetic acid, maleic acid and fumaric acid. Of all these acids, the amounts of tartaric acid and malic acid in root exudate showed significant differences between the tolerant genotype and susceptible genotype under Mn-stressed conditions. The results also indicated that secreting organic acids into root rhizosphere was an active response to Mn deficiency for the tolerant genotype of wheat.
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Issue Date: 05 March 2008
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| 1 |
Fang Z Lu S H Zhang F S 1998a Study on tolerance of different wheatcultivars or lines to manganese deficiencyPlant Nutrition and Fertilizer Science4(3)277283(in Chinese)
|
| 2 |
Fang Z Lu S H Zhang F S 1998b Effect of root extension on the tolerancesof wheat and oilseed rape to Mn deficiencyJournal of China Agricultural University3(Suppl)3237(in Chinese)
|
| 3 |
Fang Z Zhang Y G Zhang F S 2000 Mechanisms of difference in Mn efficiencybetween wheat and oilseed rapePedosphere10(3)213220
|
| 4 |
Godo G H Reisenauer H M 1980 Plant effectson soil manganese availabilitySoil SciSoc Am J44(2)993995
|
| 5 |
Graham R D 1984 Breeding for nutritional characteristics in cerealsIn: Tinker P B, Lauchli A Advances in Plant NutritionNew YorkPraegerPublishers57102
|
| 6 |
Graham R D 1988 Genotypic Differences in Tolerance to Manganese DeficiencyIn: Graham R D, Hannam R J, Uren N C, Manganese inSoils and PlantsDordrecht, TheNetherlandsMartinus Nijhoff Publishers261276
|
| 7 |
Huang C Webb M J Graham R D 1994 Manganese efficiency is expresses in barleygrowing in soil system but not in solution cultureJ Plant Nutr17(1)8395
|
| 8 |
Lu S H Liu B H 1994 Screeningfor tolerant wheat cultivars to Mn deficiencyChinese Journal of Soil Science26(3)219221(in Chinese)
|
| 9 |
Lucas R E Knezek B D 1972 Climatic andsoil conditions promoting micronutrient deficiencies in plantsIn: Mortvedt J J, Giordano P M, Lindsay W L, Micronutrientsin AgricultureMadisonSoil Sci Soc Am265288
|
| 10 |
Nayyar V K Sadana U S Takkar P N 1985 Methods and rates of application of Mnand its critical level for wheat following rice on coarse texturedsoilsFertilizer Research2173178
|
| 11 |
Reuter D J Alston A M McFarlane J D 1988 Occurrence and correction of manganesedeficiency in plantsIn: Graham R D, Hannam R J, Uren NC, Manganese in Soils and PlantsDordrechtMartinus Nijhoff Publishers205224
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