Inner bark as a crucial tissue for non-structural carbohydrate storage across three tropical woody plant communities

Autor(es)

Rosell, Julieta A. ^[1] ; Piper, I, Frida ; Jimenez-Vera, Cipatli ^{[1, 2]} ; Vergilio, Paula C. B. ^{[3, 4]} ; Marcati, Carmen R. ^[4] ; Castorena, Matiss ^{[5, 6]} ; Olson, Mark E. ^[6]

Afiliação do(s) autor(es)

^[1] Univ Nacl Autonoma Mexico, Inst Ecol, Lab Nacl Ciencias Sostenibilidad, Apartado Postal 70-275, Ciudad De Mexico 04510 - Mexico

^[2] Ctr Invest Cient & Educ Super Ensenada, Dept Biol Conservac, Ensenada, Baja California - Mexico

^[3] Univ Estadual Parana UNESPAR, Colegiado Ciencias Biol, Paranagua - Brazil

^[4] Univ Estadual Paulista, Fac Ciencias Agron, Dept Ciencia Florestal, Lab Anat Madeira, UNESP, Sao Paulo - Brazil

^[5] Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ - USA

^[6] Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Ciudad De Mexico - Mexico

• Tipo de documento: Artigo Científico
• Fonte: PLANT CELL AND ENVIRONMENT; v. 44, n. 1, p. 156-170, JAN 2021.
• Citações Web of Science: 2

Resumo

Non-structural carbohydrates (NSC) are crucial for forest resilience, but little is known regarding the role of bark in NSC storage. However, bark's abundance in woody stems and its large living fraction make it potentially key for NSC storage. We quantified total NSC, soluble sugar (SS) and starch concentrations in the most living region of bark (inner bark, IB), and sapwood of twigs, trunks and roots of 45 woody species from three contrasting tropical climates spanning global extremes of bark diversity and wide phylogenetic diversity. NSC concentrations were similar (total NSC, starch) or higher (SS) in IB than wood, with concentrations co-varying strongly. NSC concentrations varied widely across organs and species within communities and were not significantly affected by climate, leaf habit or the presence of photosynthetic bark. Starch concentration tended to increase with density, but only in wood. IB contributed substantially to NSC storage, accounting for 17-36% of total NSC, 23-47% of SS and 15-33% of starch pools. Further examination of the drivers of variation in IB NSC concentration, and taking into account the substantial contribution of IB to NSC pools, will be crucial to understand the role of storage in plant environmental adaptation. (AU)

• Processo FAPESP: 19/09417-8 - Efeito de condições ambientais (campo e controladas) na anatomia do lenho e casca em espécies tropicais
• Beneficiário: Carmen Regina Marcati
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 15/14954-1 - Atividade cambial e estrutura dos tecidos secundários em angiospermas
• Beneficiário: Carmen Regina Marcati
• Modalidade de apoio: Auxílio à Pesquisa - Regular