Please use this identifier to cite or link to this item:
Title: Root growth and anatomy of Typha domingensis Pers. related to phosphorus availability
Other Titles: Crescimento e anatomia radiculares de Typha domingensis Pers. e sua relação com a disponibilidade de fósforo
Keywords: Cattail
Macrophyte growth
Root meristems
Macrófitas - Crescimento
Meristemas radiculares
Issue Date: Aug-2021
Publisher: Associação Brasileira de Limnologia
Citation: SANTOS, J. C. B. dos et al. Root growth and anatomy of Typha domingensis Pers. related to phosphorus availability. Acta Limnologica Brasiliensia, Rio Claro, SP, v. 33, e19, 2021. DOI:
Abstract: Aim: The capacity of macrophytes to colonize large areas is often referred to as dependent of the investment in root system and its capacity to uptake nutrients. This work aimed to evaluate the phosphorus (P) effects on the root growth and anatomy as well as its capacity to uptake this nutrient by the aquatic macrophyte Typha domingensis. Methods: Plants were grown for 60 days in nutrient solution containing 0, 0.2, 0.4, 0.6 or 0.8 mM of phosphorus. At the end of the experiment, the root length and P root content as well as the root anatomy at the maturation and meristematic zones were evaluated. Results: Higher P concentrations increased the uptake of this nutrient and plant dry mass. However, the root length was reduced by higher phosphorus levels. In addition, P increased the proportion of the root cap while reduced the proportion of the procambium at the meristematic zone. Higher phosphorus concentrations reduced the xylem vessel diameter and the proportion of the vascular cylinder at the maturation zone, whereas increased phloem proportion was observed under this condition. Furthermore, higher phosphorus levels reduced the endodermis and exodermis thickness as well as the aerenchyma proportion. Conclusions: Therefore, the T. domingensis P requirement is fulfilled at 0.4 mM of this nutrient and hypertrophic conditions promote the development of unfavorable root anatomical traits and reduction of the root growth.
Appears in Collections:DBI - Artigos publicados em periódicos

This item is licensed under a Creative Commons License Creative Commons