Root morphological modification of mycorrhizal citrus (Citrus tangerine) seedlings after application with exogenous polyamines

The present work tried to determine the effects of the three polyamine (PA) species (100 mg L-1), putrescine (Put), spermidine (Spd) and spermine (Spm), on root colox`nization, root morphology and phosphorus (P) uptake of three month-old citrus (Citrus tangerine) seedlings inoculated with arbuscular...

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Bibliographic Details
Published inJournal of animal and plant sciences Vol. 21; no. 1; pp. 20 - 25
Main Authors Wu, Q.S. (Yangtze Univ., Jingzhou City (China). Coll. of Horticulture and Gardening), Zou, Y.N. (Yangtze Univ., Jingzhou City (China). Coll. of Horticulture and Gardening), Peng, Y.H. (Yangtze Univ., Jingzhou City (China). Coll. of Horticulture and Gardening), Liu, C.Y. (Yangtze Univ., Jingzhou City (China). Coll. of Horticulture and Gardening)
Format Journal Article
LanguageEnglish
Published 2011
Subjects
CARBOHYDRATE CONTENT
CITRUS
COLONIZING ABILITY
GLOMUS MOSSEAE
GROWTH
MORPHOLOGY
NUTRIENT AVAILABILITY
PHOSPHORUS
ROOTS
SEEDLINGS
SPERMIDINE
SPERMINE
VESICULAR ARBUSCULAR MYCORRHIZAE
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Summary:The present work tried to determine the effects of the three polyamine (PA) species (100 mg L-1), putrescine (Put), spermidine (Spd) and spermine (Spm), on root colox`nization, root morphology and phosphorus (P) uptake of three month-old citrus (Citrus tangerine) seedlings inoculated with arbuscular mycorrhizal fungus (AMF), Glomus mosseae. Exogenous PAs significantly increased root colonization three months after application. Sole AMF inoculation notably improved root morphology (total length, total projected area, total surface area and total volume) and growth performance (plant height, stem diameter and leaf number per plant) in comparison with non-mycorrhizal control, whilst PAs application to mycorrhizal seedlings increased more these root morphological and growth traits. AMF significantly reduced guaiacol peroxidase (G-POD) activity of root, whereas G-POD activities of mycorrhizal leaf and root were elevated by Pas, to a certain extent.
Bibliography:P34
CATPAK-75691
ISSN:1018-7081
2309-8694