Pré-penetração e período de latência de Colletotrichum tamarilloi em clones de seringueira resistentes e suscetível sob diferentes condições ambientais

Magalhães, Izabela Ponso; Gomes, Marcela Eloi; Scaloppi, Erivaldo José; Fischer, Ivan Herman; Furtado, Edson Luiz; Moreira, Bruno Rafael de Almeida; Prado, Evandro Pereira; Firmino, Ana Carolina

doi:10.18671/scifor.v49n131.13

Cited by 3 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Regarding the development of fungi at the temperatures studied, it was verified that this fungus can explore a wide range of temperatures; however, as observed by other authors [ 1 , 15 , 16 ], it has better growth in the plant at temperatures between 20 and 35 degrees. These temperatures are close to the average temperatures observed in most cities where rubber trees are grown in Brazil during most of the year [ 32 ].…”

Section: Resultssupporting

confidence: 68%

“…The pathosystem C. sublineola -sorghum ( Sorghum bicolor ) has been extensively investigated and can be cited as an example. As found by Magalhães et al [ 16 ] for rubber trees, the initial defense response to anthracnose seems to be similar between resistant and susceptible genotypes in sorghum [ 30 ].…”

Section: Resultsmentioning

confidence: 78%

“…The obtained microscope images ( Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 ) corroborate the findings of Magalhães et al [ 4 ] and reinforce the possibility that the latent period of the fungus is shorter in the susceptible clone than in resistant clones. Magalhães et al [ 16 ] reported that, although all clones showed hyphae on their leaf surfaces after 24-h wetness, RRIM 600 had more advanced development and the C. tamarilloi appressorium formation percentage was inferior in resistant clones.…”

Section: Resultsmentioning

confidence: 99%

“…This enzyme catalyzes the oxidation and polymerization of alcohol hydroxycinnamic acid in the presence of hydrogen peroxide, resulting in lignin production and deposition, as well as participating in the oxidation of phenolic compounds, which accumulate in response to infection [ 28 , 29 ]. Protein level and stomatal density were also lower in resistant clones (IAC 507 and IAC 502 and RRIM 937), compared to RRIM600, which is susceptible [ 16 ].…”

Section: Resultsmentioning

confidence: 99%

“…The development of anthracnose in rubber trees, caused by C. gloeosporioides and C. acutatum , is favored by relative humidity above 90% during 13 daily hours and mean temperatures between 26 and 32 °C [ 1 , 15 ]. According to Magalhães et al [ 16 ], temperatures between 25 and 35 °C and 24 h wetness were favorable to C. tamarilloi germination and appressorium formation in resistant and susceptible clones, but the fungus showed different development degrees.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Monitoring Colletotrichum Colonization and Reproduction in Different Rubber Tree Clones

Firmino

Magalhães

Gomes

et al. 2022

Plants

Self Cite

View full text Add to dashboard Cite

Anthracnose, caused by fungi of the genus Colletotrichum, is present in the major rubber tree crop areas in Brazil, especially in São Paulo, Mato Grosso do Sul, Paraná, Minas Gerais, Espírito Santo, and northern states. This disease can affect different tissues of the rubber tree, leading to production losses. Thus, a better understanding of the pathosystem Colletotrichum x rubber tree can provide evidence to subsequent epidemiological research and phytosanitary management studies of this disease in the field. The present study aimed to investigate C.tamarilloi colonization and reproduction steps in resistant clones (IAC 502, IAC 507, RRIM 937) and in one susceptible clone (RRIM 600) of the rubber tree, verifying the influence of temperature up to 48 h after inoculation of the fungus, under 24 h wetness. Samples were analyzed under a light, a UV and a scanning electron microscope. Data indicated that the fungus had a delay in its development in resistant clones and, although colonization was expressive 48 h after inoculation, the new spore formation rate in the analyzed samples was lower in resistant clones. For RRIM 600, rapid colonization and intensive sporulation could be observed.

show abstract

Section: Resultssupporting

confidence: 68%

Section: Resultsmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Monitoring Colletotrichum Colonization and Reproduction in Different Rubber Tree Clones

Firmino

Magalhães

Gomes

et al. 2022

Plants

Self Cite

View full text Add to dashboard Cite

show abstract

Development of a model for Colletotrichum diseases with calibration for phylogenetic clades on different host plants

Salotti

Liang

et al. 2023

Front. Plant Sci.

View full text Add to dashboard Cite

Fungi in the genus Colletotrichum cause serious pre- and post-harvest losses to several agricultural crops worldwide. Through a systematic literature review, we retrieved the published information on Colletotrichum anthracnose diseases on different host plants and developed a mechanistic model incorporating the main stages of the pathogen’s life cycle and the effect of weather. The model predicts anthracnose progress during the growing season on the aerial organs of different crops, and was parameterized for seven Colletotrichum clades (acutatum, dematium, destructivum, gloeosporioides, graminicola, and orbiculare) and the singleton species, C. coccodes. The model was evaluated for the anthracnose diseases caused by fungi belonging to five clades on six hosts by using data from 17 epidemics that occurred in Italy, the USA, Canada, and Japan. A comparison of observed versus predicted data showed a concordance correlation coefficient of 0.928 and an average distance between real data and the fitted line of 0.044. After further validation, the model could be used to support decision-making for crop protection.

show abstract

Structural and Biochemical Aspects Related to Resistance and Susceptibility of Rubber Tree Clones to Anthracnose

Magalhães

Marques

Gomes

et al. 2021

Plants

View full text Add to dashboard Cite

The aim of the present study was to evaluate structural and biochemical aspects related to the interaction of resistant (RRIM 937, IAC 502 and 507) and susceptible (RRIM 600) rubber tree clones with C. tamarillo. For such analysis, ultrathin sections of the leaf limb were embedded in historesin and differently stained to verify structural alterations and presence of starch grains, arginine, lipids, tannins and lignins. The total proteins and activity of the enzymes peroxidase and (PAL) were quantified. Stomatal density was also analyzed under a scanning electron microscope. Data indicated alterations in the cell content of resistant clones inoculated with the pathogen, as well as greater lignin and lipid accumulation in these samples. For tannins, there was no difference between inoculated and non-inoculated clones. Arginine was found at greater quantities in IAC 502 and 507. Starch grains were not detected in any of the analyzed samples. Protein level and stomatal density were lower in resistant clones. Peroxidase activity was more expressive in resistant clones. PAL activity, there was no significant difference between clones. The lignin and lipids, total protein, peroxidase activity and stomatal density may be related to the resistance of rubber tree clones to anthracnose.

show abstract

Pré-penetração e período de latência de Colletotrichum tamarilloi em clones de seringueira resistentes e suscetível sob diferentes condições ambientais

Cited by 3 publications

References 0 publications

Monitoring Colletotrichum Colonization and Reproduction in Different Rubber Tree Clones

Monitoring Colletotrichum Colonization and Reproduction in Different Rubber Tree Clones

Development of a model for Colletotrichum diseases with calibration for phylogenetic clades on different host plants

Structural and Biochemical Aspects Related to Resistance and Susceptibility of Rubber Tree Clones to Anthracnose

Contact Info

Product

Resources

About