Differential Responses of Azolla microphylla Kaulf and Azolla filiculoides Lam. to Lead Nitrate

The aquatic fern Azolla is used as a green manure for rice production systems in warm temperate and tropical regions throughout the world. We used lead nitrate in nutrient media to assess the tolerance/response of two Azolla microphylla and Azolla filiculoides to heavy metals. While both species sho...

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Published inJournal of plant biology = Singmul Hakhoe chi Vol. 43; no. 1; pp. 18 - 21
Main Authors Muthukumaras, Warny Eyini, Devi, N,A, Pothiraj, C, Jayakumar, M, Kil, Bong-Seop
Format Journal Article
LanguageKorean
Published 한국식물학회 30.03.2000
Subjects
Azoll filicoloides
aquatic fern
Axolla microphylla
green manure
heavy metals
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Summary:The aquatic fern Azolla is used as a green manure for rice production systems in warm temperate and tropical regions throughout the world. We used lead nitrate in nutrient media to assess the tolerance/response of two Azolla microphylla and Azolla filiculoides to heavy metals. While both species showed negative responses in growth with an increase in lead concentrations, They were distinctly different in their tolerance for higher concentration of the heavy metal. This was apparent in their growth and biochemical characteristics. A microphylla was more tolerant of the higher concentrations of lead nitrate (25 and 50ppm), whereas A. filiculoides had a higher rate of lead uptake.
Bibliography:The Botanical Society of Korea
KISTI1.1003/JNL.JAKO200011920127470
ISSN:1226-9239
1867-0725