Neutral-to-positive cadmium effects on germination and seedling vigor, with and without seed priming

Autor(es)

Carvalho, Marcia E. A. ; Agathokleous, Evgenios ; Nogueira, Marina L. ; Brunetto, Gustavo ; Brown, Patrick H. ; Azevedo, Ricardo A.

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF HAZARDOUS MATERIALS; v. 448, p. 11-pg., 2023-01-25.

Resumo

This review gathered and analyzed data about (i) the Cd-induced impacts on seed germination and seedling vigor, and (ii) the use of different priming agents to mitigate Cd-induced impacts on the early plant development. Critical evaluation of the obtained data revealed intriguing results. First, seeds of diverse species can endure exposures to Cd. Such endurance is exhibited as maintenance of or even improvement in the seed germination and vigor (up to 15% and 70%, respectively). Second, the main factors influencing seed tolerance to Cd toxicity are related to temporal variations in anatomical, physiological, and/or biochemical features. Third, Cd can trigger diverse transgenerational effects on plants by shaping seed endophytes, by modulating seed provisioning with resources and regulatory elements, and/or by altering seed (epi)genomics. Fourth, different chemical, biological and physical priming agents can mitigate Cd-induced impacts on seeds, sometimes enhancing their performance over the control (reference) values. Overall, this review shows that the impacts of Cd on seed germination and vigor encompass not only negative outcomes but also neutral and positive ones, depending upon the Cd dose, media properties, plant species and genotypes, plant developmental stage and organ, and management approaches. Increasing our understanding of plant tolerance mechanisms against the growing background Cd pollution is relevant to support breeding programs, agricultural practices, and health -environmental policies. (AU)

• Processo FAPESP: 22/08845-9 - Alterações no fosfoproteoma de folhas de Eucalyptus induzidas por CO2
• Beneficiário: Marina de Lima Nogueira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 22/02110-7 - Efeitos transgeracionais induzidos por cádmio no tomateiro: abordagens complementares
• Beneficiário: Marcia Eugenia Amaral de Carvalho
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 20/00133-4 - Alteração transgeracional causada pelo cádmio em plantas: um presente de pais para filhos
• Beneficiário: Marcia Eugenia Amaral de Carvalho
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado