Iron deficiency stress influences physiology of iron acquisition in marigold (Tagetes erecta L.).

Albano J.P.; Miller W.B.

Iron deficiency stress influences physiology of iron acquisition in marigold (Tagetes erecta L.).

1996

Albano J.P. | Miller W.B.

Excised roots of 'First Lady' marigold (Tagetes erecta L.) grown in an aerated 0 Fe nutrient solution had Fe(III)-DTPA reductase activity 14-fold greater, and an enhanced ability to acidify the rhizosphere than plants grown in a solution containing 0.018 mM (1 ppm) Fe-DTPA. Reductase activity and rhizosphere acidification of plants grown in 0.018 and 0.09 mM Fe-DTPA were similar. Manganese concentration in leaves of plants grown in the 0 Fe treatment was 2-fold greater than in leaves of plants grown in the 0.018 mM Fe-DTPA treatment. These results indicated that 'First Lady' marigold is an Fe-efficient plant that possesses both an inducible or adaptive reductase system and the ability to acidify the rhizosphere, and that these Fe-efficiency reactions do not occur when Fe is sufficient.

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AGROVOC Keywords

abonos de oligoelementos acidez acidification acidity application rates chlorose chlorosis clorosis contenido de materia seca contenido mineral cultivo sin tierra culture sans sol deficiencia de oligoelementos dry matter content etapas de desarrollo de la planta fer fertigation feuille fisiologia vegetal hierro hojas iron irrigation fertilisante leaves manganese manganeso micronutrient fertilizers mineral content nutrient solutions oxidoreductases oxidorreductasas ph plant developmental stages plant physiology reduction rhizosphere rizosfera root systems sistema radicular soilless culture soluciones nutritivas solution nutritive tagetes trace element deficiencies

Bibliographic information

Published in

American Society for Horticultural Science

Volume 121 ISSN 0003-1062

Pagination

v.438-441(3)

Other Subjects

Systeme racinaire; Acidite; Engrais a oligoelements; Reduccion; Fertirrigacion; Oxydoreductase; Physiologie vegetale; Dose d' application; Stade de developpement vegetal; Acidificacion; Dosis de aplicacion; Carence en oligoelement; Teneur en elements mineraux; Teneur en matiere seche

Language

English

Note

references. AVAILABILITY: US (DNAL 81 SO12).

Type

Journal Article; Journal Part

Source

American-Society-for-Horticultural-Science (USA). (May 1996). v. 121(3) p. 438-441.

Corporate Author

Clemson University, Clemson, SC.

In AGRIS since: 2012-11-15

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Iron deficiency stress influences physiology of iron acquisition in marigold (Tagetes erecta L.).

1996

AGROVOC Keywords

Bibliographic information