| Full text | |
| Author(s): Show less - |
Silveira Rabelo, Flavio Henrique
[1, 2]
;
Gaziola, Salete Aparecida
[2]
;
Rossi, Monica Lanzoni
[3]
;
Silveira, Neidiquele Maria
[4]
;
Wojcik, Malgorzata
[5]
;
Bajguz, Andrzej
[6]
;
Piotrowska-Niczyporuk, Alicja
[6]
;
Lavres, Jose
[3]
;
Linhares, Francisco Scaglia
[3]
;
Azevedo, Ricardo Antunes
[2]
;
Vangronsveld, Jaco
[1]
;
Ferracciu Alleoni, Luis Reynaldo
[2]
Total Authors: 12
|
| Affiliation: | [1] Hasselt Univ, Ctr Environm Sci, Diepenbeek - Belgium
[2] Univ Sao Paulo, Coll Agr Luiz de Queiroz, Piracicaba - Brazil
[3] Univ Sao Paulo, Ctr Nucl Energy Agr, Piracicaba - Brazil
[4] Ctr R&D Ecophysiol & Biophys, Agron Inst, Campinas - Brazil
[5] Marie Curie Sklodowska Univ, Fac Biol & Biotechnol, Lublin - Poland
[6] Univ Bialystok, Fac Biol & Chem, Bialystok - Poland
Total Affiliations: 6
|
| Document type: | Journal article |
| Source: | PHYSIOLOGIA PLANTARUM; v. 173, n. 1, p. 20-44, SEP 2021. |
| Web of Science Citations: | 1 |
| Abstract | |
We evaluated the mechanisms that control Cd accumulation and distribution, and the mechanisms that protect the photosynthetic apparatus ofBrachiaria decumbensStapf. cv. Basilisk andPanicum maximumJacq. cv. Massai from Cd-induced oxidative stress, as well as the effects of simulated summer or winter conditions on these mechanisms. Both grasses were grown in unpolluted and Cd-polluted Oxisol (0.63 and 3.6 mg Cd kg(-1)soil, respectively) at summer and winter conditions. Grasses grown in the Cd-polluted Oxisol presented higher Cd concentration in their tissues in the winter conditions, but the shoot biomass production of both grasses was not affected by the experimental conditions. Cadmium was more accumulated in the root apoplast than the root symplast, contributing to increase the diameter and cell layers of the cambial region of both grasses. Roots ofB. decumbenswere more susceptible to disturbed nutrients uptake and nitrogen metabolism than roots ofP. maximum. Both grasses translocated high amounts of Cd to their shoots resulting in oxidative stress. Oxidative stress in the leaves of both grasses was higher in summer than winter, but only inP. maximumsuperoxide dismutase (SOD) and ascorbate peroxidase (APX) activities were increased. However, CO(2)assimilation was not affected due to the protection provided by reduced glutathione (GSH) and phytochelatins (PCs) that were more synthesized in shoots than roots. In summary, the root apoplast was not sufficiently effective to prevent Cd translocation from roots to shoot, but GSH and PCs provided good protection for the photosynthetic apparatus of both grasses. (AU) | |
| FAPESP's process: | 17/11299-8 - Cadmium bioavailability in an Oxisol (Typic Hapludox) and its relation with the tolerance of Brachiaria decumbens and Panicum maximum using Noccaea caerulescens as model plant |
| Grantee: | Flávio Henrique Silveira Rabêlo |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 18/07190-3 - Bacterial communities in the rhizosphere of Brachiaria decumbens, Panicum maximum and Noccaea caerulescens used for cadmium phytoextraction in an Oxisol (Typic Hapludox) |
| Grantee: | Flávio Henrique Silveira Rabêlo |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |