Increase in Lead (Pb) Concentration in the Soil Can Cause Morphophysiological Changes in the Leaves of Inga vera subsp. affinis (DC.) T.D.Penn. and Inga laurina (Sw.) Willd.

The accumulation of heavy metals, such as lead (Pb), causes environmental degradation, affecting human health and plant metabolism. Pb can alter plant physiological processes, including photosynthesis, influencing the structure of chloroplasts and leaf tissues. The present study aimed to evaluate th...

ver descrição completa

Detalhes bibliográficos
Autores: de Carvalho, Isabella Fiorini [UNESP], Rosalem, Patricia Fernanda [UNESP], Frachia, Caroline de Lima [UNESP], Alves, Patrícia Borges [UNESP], Cozin, Bruno Bonadio [UNESP], Gonçalves, Ricardo de Almeida [UNESP], Bomfim, Nayane Cristina Pires [UNESP], de Souza, Roberta Possas [UNESP], Martins, Aline Redondo [UNESP], de Camargos, Liliane Santos [UNESP]
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:Brasil
Recursos:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/301088
Acesso em linha:http://dx.doi.org/10.3390/plants14060856
https://hdl.handle.net/11449/301088
Access Level:acceso abierto
Palavra-chave:abiotic stress
gas exchange
heavy metal
leaf anatomy
legume
morphophysiology
photosynthesis
Descrição
Resumo:The accumulation of heavy metals, such as lead (Pb), causes environmental degradation, affecting human health and plant metabolism. Pb can alter plant physiological processes, including photosynthesis, influencing the structure of chloroplasts and leaf tissues. The present study aimed to evaluate the effect of increasing lead concentrations in soil on gas exchange, photosynthetic pigments, and the anatomy of leaf tissues in Inga vera subsp. affinis and Inga laurina. The experiment was conducted in a greenhouse using a randomized block design in a 2 × 6 factorial scheme, with Pb concentrations of 0, 100, 200, 300, 400, and 500 mg dm−3. I. vera subsp. affinis and I. laurina maintained stable photosynthetic parameters even under high Pb concentrations. Regarding photosynthetic pigments, I. vera subsp. affinis exhibited high levels of chlorophyll a and b, even at the highest Pb concentration. Additionally, I. laurina showed a greater accumulation of carotenoids and phenolic compounds at higher Pb doses. In leaf tissues, Pb did not alter thickness. These results suggest that both species possess adaptation mechanisms to heavy metal stress, enabling the maintenance of photosynthetic activity and ensuring the completion of their life cycle under adverse conditions.

Registos relacionados