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2021
Silva, Adielle Rodrigues; Silva, Delmira Costa; Pinto, Kaliane Nascimento Santos; Filho, Hermes Peixoto Santos; Filho, Maurício Antônio Coelho; Filho, Walter Santos Soares; Ferreira, Cláudia Fortes; Gesteira, Abelmon Silva
Epigenetic responses to Phytophthora citrophthora gummosis in citrus Journal Article
In: Plant Science, vol. 313, pp. 111082, 2021, ISSN: 0168-9452.
Abstract | Links | BibTeX | Tags: Biotic stress, DNA methylation, Oomycetes, Plant immunity, rootstock
@article{nokey,
title = {Epigenetic responses to Phytophthora citrophthora gummosis in citrus},
author = {Adielle Rodrigues Silva and Delmira Costa Silva and Kaliane Nascimento Santos Pinto and Hermes Peixoto Santos Filho and Maurício Antônio Coelho Filho and Walter Santos Soares Filho and Cláudia Fortes Ferreira and Abelmon Silva Gesteira},
doi = {10.1016/J.PLANTSCI.2021.111082},
issn = {0168-9452},
year = {2021},
date = {2021-01-01},
journal = {Plant Science},
volume = {313},
pages = {111082},
publisher = {Elsevier},
abstract = {Studies show that DNA methylation is associated with plant immunity but little is known as to how this epigenetic mechanism assists plants in adjusting their responses to biotic stress, especially when interacting with an hemibiotrophic pathogen such as citrus Phytophthora. The aim of the present study was to assess the effects of scion-rootstock interaction on plant resistance to P. citrophthora infection and DNA methylation patterns in ‘Pera’ sweet orange and ‘Tahiti’ acid lime grafted onto ‘Rangpur’ lime and ‘Tropical’ sunki rootstocks reinoculated with P. citrophthora. Results showed that reinoculated plants of the ‘Pera’ sweet orange/‘Rangpur’ lime and ‘Tahiti’ acid lime/‘Tropical’ sunki combinations with more and less sensitive varieties to Phytophthora, presented smaller stem lesions and increased frequency of full methylation and hemimethylation rates, compared to inoculated plants. In contrast, ‘Tahiti’ acid lime/‘Rangpur’ lime, two highly sensitive varieties, and ‘Pera’/‘Tropical’ sunki, two much less sensitive varieties, showed high increases in the frequency of hemimethylation and non-methylation levels. Results suggest that in citrus, both the scion-rootstock interaction and DNA methylation affect the response to P. citrophthora infection. Reinoculated plants, depending on the combination, showed changes in intracellular hyphae growth through the formation of sets of fibers and crystal accumulation in the periderm, cortex, and phloem. In addition, starch grain concentration was higher in reinoculated plants in comparison to inoculated plants. These findings support the assumption that DNA methylation is a plant defense mechanism and therefore may be exploited to improve the response of plants to the gummosis of P. citrophthora in citrus.},
keywords = {Biotic stress, DNA methylation, Oomycetes, Plant immunity, rootstock},
pubstate = {published},
tppubtype = {article}
}
Studies show that DNA methylation is associated with plant immunity but little is known as to how this epigenetic mechanism assists plants in adjusting their responses to biotic stress, especially when interacting with an hemibiotrophic pathogen such as citrus Phytophthora. The aim of the present study was to assess the effects of scion-rootstock interaction on plant resistance to P. citrophthora infection and DNA methylation patterns in ‘Pera’ sweet orange and ‘Tahiti’ acid lime grafted onto ‘Rangpur’ lime and ‘Tropical’ sunki rootstocks reinoculated with P. citrophthora. Results showed that reinoculated plants of the ‘Pera’ sweet orange/‘Rangpur’ lime and ‘Tahiti’ acid lime/‘Tropical’ sunki combinations with more and less sensitive varieties to Phytophthora, presented smaller stem lesions and increased frequency of full methylation and hemimethylation rates, compared to inoculated plants. In contrast, ‘Tahiti’ acid lime/‘Rangpur’ lime, two highly sensitive varieties, and ‘Pera’/‘Tropical’ sunki, two much less sensitive varieties, showed high increases in the frequency of hemimethylation and non-methylation levels. Results suggest that in citrus, both the scion-rootstock interaction and DNA methylation affect the response to P. citrophthora infection. Reinoculated plants, depending on the combination, showed changes in intracellular hyphae growth through the formation of sets of fibers and crystal accumulation in the periderm, cortex, and phloem. In addition, starch grain concentration was higher in reinoculated plants in comparison to inoculated plants. These findings support the assumption that DNA methylation is a plant defense mechanism and therefore may be exploited to improve the response of plants to the gummosis of P. citrophthora in citrus.
Silva, Adielle Rodrigues; Silva, Delmira Costa; Pinto, Kaliane Nascimento Santos; Filho, Hermes Peixoto Santos; Filho, Maurício Antônio Coelho; Filho, Walter Santos Soares; Ferreira, Cláudia Fortes; Gesteira, Abelmon Silva
Epigenetic responses to Phytophthora citrophthora gummosis in citrus Journal Article
In: Plant Science, vol. 313, pp. 111082, 2021, ISSN: 0168-9452.
Abstract | Links | BibTeX | Tags: Biotic stress, DNA methylation, Oomycetes, Plant immunity, rootstock
@article{nokey,
title = {Epigenetic responses to Phytophthora citrophthora gummosis in citrus},
author = {Adielle Rodrigues Silva and Delmira Costa Silva and Kaliane Nascimento Santos Pinto and Hermes Peixoto Santos Filho and Maurício Antônio Coelho Filho and Walter Santos Soares Filho and Cláudia Fortes Ferreira and Abelmon Silva Gesteira},
doi = {10.1016/J.PLANTSCI.2021.111082},
issn = {0168-9452},
year = {2021},
date = {2021-01-01},
journal = {Plant Science},
volume = {313},
pages = {111082},
publisher = {Elsevier},
abstract = {Studies show that DNA methylation is associated with plant immunity but little is known as to how this epigenetic mechanism assists plants in adjusting their responses to biotic stress, especially when interacting with an hemibiotrophic pathogen such as citrus Phytophthora. The aim of the present study was to assess the effects of scion-rootstock interaction on plant resistance to P. citrophthora infection and DNA methylation patterns in ‘Pera’ sweet orange and ‘Tahiti’ acid lime grafted onto ‘Rangpur’ lime and ‘Tropical’ sunki rootstocks reinoculated with P. citrophthora. Results showed that reinoculated plants of the ‘Pera’ sweet orange/‘Rangpur’ lime and ‘Tahiti’ acid lime/‘Tropical’ sunki combinations with more and less sensitive varieties to Phytophthora, presented smaller stem lesions and increased frequency of full methylation and hemimethylation rates, compared to inoculated plants. In contrast, ‘Tahiti’ acid lime/‘Rangpur’ lime, two highly sensitive varieties, and ‘Pera’/‘Tropical’ sunki, two much less sensitive varieties, showed high increases in the frequency of hemimethylation and non-methylation levels. Results suggest that in citrus, both the scion-rootstock interaction and DNA methylation affect the response to P. citrophthora infection. Reinoculated plants, depending on the combination, showed changes in intracellular hyphae growth through the formation of sets of fibers and crystal accumulation in the periderm, cortex, and phloem. In addition, starch grain concentration was higher in reinoculated plants in comparison to inoculated plants. These findings support the assumption that DNA methylation is a plant defense mechanism and therefore may be exploited to improve the response of plants to the gummosis of P. citrophthora in citrus.},
keywords = {Biotic stress, DNA methylation, Oomycetes, Plant immunity, rootstock},
pubstate = {published},
tppubtype = {article}
}
Studies show that DNA methylation is associated with plant immunity but little is known as to how this epigenetic mechanism assists plants in adjusting their responses to biotic stress, especially when interacting with an hemibiotrophic pathogen such as citrus Phytophthora. The aim of the present study was to assess the effects of scion-rootstock interaction on plant resistance to P. citrophthora infection and DNA methylation patterns in ‘Pera’ sweet orange and ‘Tahiti’ acid lime grafted onto ‘Rangpur’ lime and ‘Tropical’ sunki rootstocks reinoculated with P. citrophthora. Results showed that reinoculated plants of the ‘Pera’ sweet orange/‘Rangpur’ lime and ‘Tahiti’ acid lime/‘Tropical’ sunki combinations with more and less sensitive varieties to Phytophthora, presented smaller stem lesions and increased frequency of full methylation and hemimethylation rates, compared to inoculated plants. In contrast, ‘Tahiti’ acid lime/‘Rangpur’ lime, two highly sensitive varieties, and ‘Pera’/‘Tropical’ sunki, two much less sensitive varieties, showed high increases in the frequency of hemimethylation and non-methylation levels. Results suggest that in citrus, both the scion-rootstock interaction and DNA methylation affect the response to P. citrophthora infection. Reinoculated plants, depending on the combination, showed changes in intracellular hyphae growth through the formation of sets of fibers and crystal accumulation in the periderm, cortex, and phloem. In addition, starch grain concentration was higher in reinoculated plants in comparison to inoculated plants. These findings support the assumption that DNA methylation is a plant defense mechanism and therefore may be exploited to improve the response of plants to the gummosis of P. citrophthora in citrus.
2020
Santos, Ariana S.; Neves, Diana M.; Santana-Vieira, Dayse Drielly S.; Almeida, Lucas Aragão H.; Costa, Márcio Gilberto C.; Filho, Walter S. Soares; Pirovani, Carlos P.; Filho, Mauricio Antônio Coelho; Ferreira, Cláudia F.; Gesteira, Abelmon S.
Citrus scion and rootstock combinations show changes in DNA methylation profiles and ABA insensitivity under recurrent drought conditions Journal Article
In: Scientia Horticulturae, vol. 267, pp. 109313, 2020, ISSN: 0304-4238.
Abstract | Links | BibTeX | Tags: Abscisic acid, Antioxidant enzymes, Citrus, DNA methylation, Epigenetics, water deficit
@article{Santos2020,
title = {Citrus scion and rootstock combinations show changes in DNA methylation profiles and ABA insensitivity under recurrent drought conditions},
author = {Ariana S. Santos and Diana M. Neves and Dayse Drielly S. Santana-Vieira and Lucas Aragão H. Almeida and Márcio Gilberto C. Costa and Walter S. Soares Filho and Carlos P. Pirovani and Mauricio Antônio Coelho Filho and Cláudia F. Ferreira and Abelmon S. Gesteira},
doi = {10.1016/J.SCIENTA.2020.109313},
issn = {0304-4238},
year = {2020},
date = {2020-01-01},
journal = {Scientia Horticulturae},
volume = {267},
pages = {109313},
publisher = {Elsevier},
abstract = {The physiological, biochemical and molecular responses of scion/rootstock interactions in citrus plants under recurrent drought conditions are still poorly understood. The responses of ‘Tahiti acid lime’ (TAL) scions grafted to two rootstocks that have different survival strategies under drought conditions ‘Rangpur lime’ (RL) and ‘Sunki Maravilha mandarin’ (SM) were investigated during three periods of water deficit, WD1, WD2 and WD3 (plants exposed to one, two and three periods of water deficit, respectively). In the three drought periods, the ΨL was maintained at an average of -2.0 MPa. The TAL / SM and TAL / RL combinations showed, due to water deficit, hypermethylation and hypomethylation in the DNA methylation profiles respectively. The physiological parameters analyzed showed very close values for the TAL / SM and TAL / RL combinations, which indicates that the TAL does not respond to rootstock behavior with different response patterns to water deficit. Other findings suggest that the TAL scion is unresponsive to the plant hormone ABA, which plays a crucial role in plant responses to water deficit. The results show that the severity and recurrence of drought stress conditions reduced excessive ROS production through the action of the antioxidant enzymes, which confirms the different defense mechanisms to drought stress conditions that can be used by these scion/rootstock combinations. We concluded that the epigenetic marks they are involved in the responses to water deficit, conferring tolerance the citrus plants. In addition, in a recurrent water restriction condition the physiological parameters and the antioxidant system are genotype - dependent responsive. The present study addresses epigenetic modifications, physiological and biochemical mechanisms associated with drought tolerance in citrus plants.},
keywords = {Abscisic acid, Antioxidant enzymes, Citrus, DNA methylation, Epigenetics, water deficit},
pubstate = {published},
tppubtype = {article}
}
The physiological, biochemical and molecular responses of scion/rootstock interactions in citrus plants under recurrent drought conditions are still poorly understood. The responses of ‘Tahiti acid lime’ (TAL) scions grafted to two rootstocks that have different survival strategies under drought conditions ‘Rangpur lime’ (RL) and ‘Sunki Maravilha mandarin’ (SM) were investigated during three periods of water deficit, WD1, WD2 and WD3 (plants exposed to one, two and three periods of water deficit, respectively). In the three drought periods, the ΨL was maintained at an average of -2.0 MPa. The TAL / SM and TAL / RL combinations showed, due to water deficit, hypermethylation and hypomethylation in the DNA methylation profiles respectively. The physiological parameters analyzed showed very close values for the TAL / SM and TAL / RL combinations, which indicates that the TAL does not respond to rootstock behavior with different response patterns to water deficit. Other findings suggest that the TAL scion is unresponsive to the plant hormone ABA, which plays a crucial role in plant responses to water deficit. The results show that the severity and recurrence of drought stress conditions reduced excessive ROS production through the action of the antioxidant enzymes, which confirms the different defense mechanisms to drought stress conditions that can be used by these scion/rootstock combinations. We concluded that the epigenetic marks they are involved in the responses to water deficit, conferring tolerance the citrus plants. In addition, in a recurrent water restriction condition the physiological parameters and the antioxidant system are genotype - dependent responsive. The present study addresses epigenetic modifications, physiological and biochemical mechanisms associated with drought tolerance in citrus plants.