Belowground interactions affect shoot growth in Eucalyptus urophylla under restrictive conditions

Autor(es)

Parise, Andre Geremia ^[1] ; Bertoli, Suzana Chiari ^[1] ; Souza, Gustavo Maia ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Pelotas, Inst Biol, Dept Bot, Lab Plant Cognit & Electrophysiol LACEV, Pelotas, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PLANT SIGNALING & BEHAVIOR; v. 16, n. 9 MAY 2021.
• Citações Web of Science: 0

Resumo

Plant-plant interactions like competition or facilitation between seedlings can have profound implications on their establishment and posterior development. These interactions are variable and depend upon the presence of neighbouring plants and environmental factors. In this work, we studied the effects of the interaction by the roots of Eucalyptus urophylla seedlings from a population under various environmental stressful conditions: water deficit, nutrient deficit, low light, low temperature, and high temperature. To evaluate it, we measured some growth and morphological parameters. We demonstrated that shoot parameters such as the number of leaves, leaf area, and dry weight of the leaves were the most affected parameters due to the belowground plant-plant interaction under various environmental conditions. We did not find evidence for competition among the plants, especially under restrictive conditions. Therefore, the study corroborates the stress-gradient hypothesis, which states that plants' differences under stressful conditions lead to facilitative interactions. It has implications for plant ecology and forestry techniques. (AU)

• Processo FAPESP: 11/21591-1 - Capacidade de auto e não-auto referência no processo de interação entre plântulas de Eucalyptus urophylla sob diferentes condições ambientais
• Beneficiário: Suzana Chiari Bertolli
• Modalidade de apoio: Bolsas no Brasil - Doutorado