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Bioaccumulation of heavy metals in the tissues of Schizothorax plagiostomus at River Swat / Bioacumulação de metais pesados nos tecidos de Plagiostomo esquizotórax em River Swat
Shah, M; Kausar, S; Mian, J A; Jabeen, H; Ullah, N; Rasool, A; Akbar, F; Israr, M; Mehmood, S A; Ahmad, S; Khan, M A A; Muhammad, S; Khan, W; Bibi, S; Sayaf, A M; Usman, K; Ahmed, D.
Affiliation
  • Shah, M; University of Swat. Centre for Animal Sciences and Fisheries. Charbagh. PK
  • Kausar, S; University of Swat. Centre for Animal Sciences and Fisheries. Charbagh. PK
  • Mian, J A; University of Swat. Centre for Animal Sciences and Fisheries. Charbagh. PK
  • Jabeen, H; Women University Mardan. Department of Microbiology. Mardan. PK
  • Ullah, N; University of Swat. Centre for Animal Sciences and Fisheries. Charbagh. PK
  • Rasool, A; University of Swat. Centre for Biotechnology and Microbiology. Charbagh. PK
  • Akbar, F; University of Swat. Centre for Biotechnology and Microbiology. Charbagh. PK
  • Israr, M; University of Swat. Department of Forensics Sciences. Charbagh. PK
  • Mehmood, S A; Hazara University Mansehra. Department of Zoology. Mansehra. PK
  • Ahmad, S; Hazara University Mansehra. Department of Zoology. Mansehra. PK
  • Khan, M A A; University of Peshawar. Centre of Biotechnology and Microbiology. Peshawar. PK
  • Muhammad, S; University of Swat. Institute of Agricultural Sciences & Forestry. Charbagh. PK
  • Khan, W; University of Malakand. Department of Zoology. Chakdara. PK
  • Bibi, S; Hazara University Mansehra. Department of Zoology. Mansehra. PK
  • Sayaf, A M; University in São Paulo. Instituto de Quimica. BR
  • Usman, K; University of Science & Technology. Department of Zoology. Abbottabad. PK
  • Ahmed, D; University of Haripur. Department of Medical Lab Technology. Haripur. PK
Braz. j. biol ; 82: e243633, 2022. tab, graf
Article de En | LILACS, VETINDEX | ID: biblio-1249273
Bibliothèque responsable: BR1.1
ABSTRACT
Root deformation (RD) caused by errors in the pricking out process are irreversible and very difficult to detect in container-grown seedlings at the time of planting in the field. The objective of this study was to evaluate the effects of RD on leaf gas exchange, growth, biomass allocation and mineral nutrition of G. americana seedlings during the recovery phase after soil flooding. Four-months-old seedlings, with and without RD, were flooded for 42 days and their recovery was evaluated 28 days after soil drainage. There were no significant interactions between RD and soil flooding for all leaf gas exchange, growth and mineral nutrition after soil drainage, with the exception of leaf P concentrations. In plants with no RD, the P concentration in leaves of non-flooded plants was significantly higher than that of plants with RD. Soil flooding and RD did not influence leaf or root N concentrations or whole-plant N content. RD increased the K concentration in the roots, but not in the leaves. Changes in the nutrient concentrations in leaves and roots indicate that RD may affect physiological performance of seedlings after planting in the field.
RESUMO
A deformação da raiz (RD) causada por erros no processo de repicagem é irreversível e difícil de detectar em mudas produzidas em embalagens no momento do plantio no campo. O objetivo deste estudo foi avaliar os efeitos do RD nas trocas gasosas foliares, crescimento, alocação de biomassa e nutrição mineral de mudas de G. americana na fase de recuperação após o alagamento do solo. Mudas com quatro meses de idade, com e sem RD, foram alagadas por 42 dias e a sua recuperação foi avaliada 28 dias após a drenagem do solo. Não houve interação significativa entre RD e alagamento do solo nas trocas gasosas foliares, crescimento e nutrição mineral após a drenagem, com exceção das concentrações de P foliar. Em plantas sem RD, a concentração de P nas folhas de plantas não alagadas foi significativamente maior que a das plantas com RD. O alagamento do solo e a RD não influenciaram as concentrações de N nas folhas e raízes, e no conteúdo de N na planta inteira. A RD aumentou a concentração de K nas raízes, mas não nas folhas. Alterações nas concentrações de nutrientes nas folhas e raízes indicam que a RD pode afetar o desempenho fisiológico das mudas após o plantio no campo.
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Texte intégral: 1 Indice: LILACS Sujet Principal: Polluants chimiques de l'eau / Cyprinidae / Métaux lourds Limites du sujet: Animals Pays comme sujet: Asia langue: En Texte intégral: Braz. j. biol Thème du journal: BIOLOGIA Année: 2022 Type: Article

Texte intégral: 1 Indice: LILACS Sujet Principal: Polluants chimiques de l'eau / Cyprinidae / Métaux lourds Limites du sujet: Animals Pays comme sujet: Asia langue: En Texte intégral: Braz. j. biol Thème du journal: BIOLOGIA Année: 2022 Type: Article