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Differential translocation of 59Iron in iron sufficient and deficient sorghum plants

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Title Differential translocation of 59Iron in iron sufficient and deficient sorghum plants
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Creator G. Singh
N.S. Nathawat
Nand Kishore
S. Ramani
N.K. Ramaswamy
S.F. D’Souza
M.P. Sahu
 
Subject iron chlorosis, foliar application, ferrous sulfate, citric acid, thiourea, thioglycollic acid, chlorophylls, active iron, iron (59Fe) uptake, thiols, Sorghum bicolor
 
Description Not Available
Radioactively labeled iron (59Fe) was used to study differential uptake in sorghum plants in the recovery stage of chlorosis. Radio-labeled 59Fe was supplied through root feeding in nutrient solution experiment (48 hrs, pH 6.2) to non-chlorotic and chlorotic plants. Chlorotic plants were further treated with foliar spray [ferrous sulfate (FeSO4), FeSO4 + thiourea (TU), FeSO4 + citric acid (CA), FeSO4 + thioglycollic acid (TGA)] to study the uptake of radio-labeled 59Fe through root feeding during recovery process of chlorosis. Under iron deficiency, the differential uptake of 59Fe was markedly increased in leaves and stem of chlorotic control (-Fe) sorghum plants as compared to nonchlorotic control ( + Fe) and foliar sprayed (FeSO4, FeSO4 + TU, FeSO4 + CA, and FeSO4 + TGA) plants. The lowest uptake of 59Fe was observed in younger leaves (24.33 nmol, g−1 fresh weight h−1) and stem (1.98 nmol, g−1 fresh weight h−1) of non-chlorotic control followed by foliar sprayed plants in comparison to chlorotic control, respectively. Similarly less 59Fe uptake was observed in the older leaves of FeSO4 + CA sprayed (21.70 nmol, g−1 fresh weight h−1) plants in comparison to chlorotic control (35.60 nmol, g−1 fresh weight h−1). The highest differential 59Fe uptake through nutrient medium was in the roots of plants, which were foliar sprayed with FeSO4 along with TU. The role of iron alone and along with citric acid and thiol compounds is discussed in recovery of chlorosis.
Not Available
 
Date 2019-05-17T06:23:36Z
2019-05-17T06:23:36Z
2011-01-01
 
Type Research Paper
 
Identifier Not Available
ISSN: 0190-4167 print / 1532-4087 online
http://krishi.icar.gov.in/jspui/handle/123456789/19682
 
Language English
 
Relation Not Available;
 
Publisher Taylor & Francis Group, LLC