The Genetic Identification of Species of Agronomic Azolla Lam. Indigenous to Mexico

Zimmerman, William; Lizaola, Roberto Quintero; Ferrera‐Cerrato, Ronald

doi:10.2307/1547460

Cited by 1 publication

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“…The Mexican accession of A. filiculoides (13-XO Colegio de Postgraduados, Zimmerman et al 1993) was utilized as a test organism. Based on the literature, this aquatic fern species has been previously reported as hyperaccumulator of As (Zhang et al 2008).…”

Section: Azolla Accession and Experiments Establishmentmentioning

confidence: 99%

Short-Term Effects of Arsenate-Induced Toxicity on Growth, Chlorophyll and Carotenoid Contents, and Total Content of Phenolic Compounds of Azolla filiculoides

Sánchez-Viveros

Ferrera‐Cerrato

Alarcón

2010

Water Air Soil Pollut

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This study evaluated the toxic effects of arsenic (As) on the growth, total antioxidant activity, total content of phenolic compounds, and content of photosynthetic pigments of Azolla filiculoides. The aquatic fern was propagated and exposed to Yoshida nutrient solution contaminated with sodium arsenate (Na 2 HAsO 4 ·7H 2 O) at six concentrations (5, 10, 20, 30, 60, and 120 μgAsmL −1 ), including the control without As contamination. Azolla cultures were kept under environmental chamber conditions 26°C, 12 h photoperiod and 80% HR for 96 h. Increased As concentrations (>30 μgmL −1 ) significantly diminished growth of A. filiculoides and the total content of chlorophyll and total phenolic compounds, but significantly enhanced of total carotenoid+xanthophylls content. The concentrations of 5 and 10 μgAsmL −1 significantly stimulated the growth of A. filiculoides. This aquatic fern tolerates As concentrations lower than 30 μgmL −1 , and its maximum As accumulation (28 μgg −1 dry weight) was achieved when exposed to 60 μg As mL −1 , but showing clear symptoms of As toxicity.

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Section: Azolla Accession and Experiments Establishmentmentioning

confidence: 99%