Plant Defence: Biological Control

Mérillon, Jean Michel; Ramawat, K. G.

doi:10.1007/978-94-007-1933-0

Cited by 18 publications

(3 citation statements)

References 619 publications

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“…Mycorrhizal inoculation of coffee plants in greenhouses may be a useful practice for minimizing the deleterious effects of nematode infection (Vaast et al 1998). Thus, the current study suggests that AMF should be inoculated before nematode invasion, given that largest decreases in nematode infections usually occur in roots extensively occupied by the fungus, before being invaded by nematodes (Moosavi and Zare 2012). This improves the establishment of coffee seedlings after transplanting (Sewnet and Tuju 2013).…”

Section: Discussionmentioning

confidence: 79%

The Role of Arbuscular Mycorrhizal Fungi Against Root-Knot Nematode Infections in Coffee Plants

Vallejos-Torres

Espinoza

Marín-Díaz

et al. 2020

J Soil Sci Plant Nutr

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Coffee (Coffea arabica) is one of the most important tropical crops in the world, and root-knot nematode (Meloidogyne spp.) infections are one of the main factors that negatively affect crop yields throughout the South American region. This study aimed to evaluate the role of indigenous arbuscular mycorrhizal fungi against root-knot nematode infections in coffee plants grown under different soil conditions in the Peruvian Amazon. The experimental design was a 3A × 2B × 4C factorial scheme with 24 treatments. Each experimental unit consisted of six coffee plants, with three replicates in randomized blocks, totaling 18 coffee plants per treatment. The studied factors were soil conditions (A), types of coffee propagation (B), and arbuscular mycorrhizal fungi consortia (C). The data were statistically examined by three-way analysis of variance, and the Tukey HSD test was applied for multiple comparisons of group means. Mycorrhiza-induced tolerance was confirmed against root-knot nematodes, as the severity of infection was significantly lower in mycorrhizal roots, with an average reduction of 52.5%, 38.5% and 38.3% in coffee plants inoculated with Huall-pache, Do-cat, and Mo-cat, respectively. Furthermore, the effects on plant growth and biological control vary depending on the diversity of arbuscular mycorrhizal fungi consortia, soil conditions, and type of propagation. This study therefore demonstrates that the inoculation of coffee plants with indigenous arbuscular mycorrhizal fungi prior to field establishment promotes coffee plant growth after root-knot nematode infections.

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Section: Discussionmentioning

confidence: 79%

The Role of Arbuscular Mycorrhizal Fungi Against Root-Knot Nematode Infections in Coffee Plants

Vallejos-Torres

Espinoza

Marín-Díaz

et al. 2020

J Soil Sci Plant Nutr

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“…For instance, nine uncharacterized proteins (M1CLH3, M1BN73, M1DR90, M1AJH8, M0ZJT7, M1BAU5, M1C4P4, M1BAU6, and M1ACY3) containing pathogenesis-related protein Bet v I (PR) binding domain were specifically down-regulated in FA-Phy with very high negative foldchange (Table 1). PR-related proteins are antimicrobial proteins induced by the host against the pathogen [35]. The suppression of PR proteins suggests that PI compromised the FA-Phy defense system.…”

Section: Dynamic Reprogramming Of Shared Proteins Revealed Potential mentioning

confidence: 99%

Comparative proteomics of three Chinese potato cultivars to improve understanding of potato molecular response to late blight disease

et al. 2020

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Background Late blight disease (LBD) caused by the pathogen Phytophthora infestans (PI), is the most devastating disease limiting potato (Solanum tuberosum) production globally. Currently, this disease pathogen is re-emerging and appearing in new areas at a very high intensity. A better understanding of the natural defense mechanisms against PI in different potato cultivars especially at the protein level is still lacking. Therefore, to elucidate potato proteome response to PI, we investigated changes in the proteome and leaf morphology of three potato cultivars, namely; Favorita (FA), Mira (MA), and E-malingshu N0.14 (E14) infected with PI by using the iTRAQ-based quantitative proteomics analysis. Results A total of 3306 proteins were found in the three potato genotypes, and 2044 proteins were quantified. Cluster analysis revealed MA and E14 clustered together separately from FA. The protein profile and related functions revealed that the cultivars shared a typical hypersensitive response to PI, including induction of elicitors, oxidative burst, and suppression of photosynthesis in the potato leaves. Meanwhile, MA and E14 deployed additional specific response mechanism different from FA, involving high induction of protease inhibitors, serine/threonine kinases, terpenoid, hormone signaling, and transport, which contributed to MA tolerance of LBD. Furthermore, inductions of pathogenesis-related proteins, LRR receptor-like kinases, mitogen-activated protein kinase, WRKY transcription factors, jasmonic acid, and phenolic compounds mediate E14 resistance against LBD. These proteins were confirmed at the transcription level by a quantitative polymerase chain reaction and at the translation level by western-blot. Conclusions We found several proteins that were differentially abundant among the cultivars, that includes common and cultivar specific proteins which highlighted similarities and significant differences between FA, MA, and E14 in terms of their defense response to PI. Here the specific accumulation of mitogen-activated protein kinase, Serine/threonine kinases, WRKY transcription played a positive role in E14 immunity against PI. The candidate proteins identified reported in this study will form the basis of future studies and may improve our understanding of the molecular mechanisms of late blight disease resistance in potato.

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“…It is widely considered that higher production of SMs is associated with enhanced chemical defensive response [18]. This leads to the use of a considerable number of elicitors of biotic and abiotic origin in improving production of the SMs in plant cells [74,78,79].…”

Section: Discussionmentioning

confidence: 99%

Impact of Plant-Associated Bacteria on the In Vitro Growth and Pathogenic Resistance against Phellinus tremulae of Different Aspen (Populus) Genotypes

et al. 2021

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Aspens (Populus tremula and its hybrids), economically and ecologically important fast-growing trees, are often damaged by Phellinus tremulae, a rot-causing fungus. Plant-associated bacteria can be used to increase plant growth and resistance; however, no systematic studies relating the activity of symbiotic bacteria to aspen resistance against Phellinus tremulae have been conducted so far. The present pioneer study investigated the responses of two Populus tremula and two P. tremula × P. tremuloides genotypes to in vitro inoculations with, first, either Pseudomonas sp. or Paenibacillus sp. bacteria (isolated originally from hybrid aspen tissue cultures and being most closely related to Pseudomonas oryzihabitans and Paenibacillus tundrae, respectively) and, in the subsequent stage, with Phellinus tremulae. Both morphological parameters of in vitro-grown plants and biochemical content of their leaves, including photosynthesis pigments and secondary metabolites, were analyzed. It was found that both Populus tremula × P. tremuloides genotypes, whose development in vitro was significantly damaged by Phellinus tremulae, were characterized by certain responses to the studied bacteria: decreased shoot development by both Paenibacillus sp. and Pseudomonas sp. and increased phenol content by Pseudomonas sp. In turn, these responses were lacking in both Populus tremula genotypes that showed in vitro resistance to the fungus. Moreover, these genotypes showed positive long-term growth responses to bacterial inoculation, even synergistic with the subsequent fungal inoculation. Hence, the studied bacteria were demonstrated as a potential tool for the improved in vitro propagation of fungus-resistant aspen genotypes.

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Plant Defence: Biological Control

Cited by 18 publications

References 619 publications

The Role of Arbuscular Mycorrhizal Fungi Against Root-Knot Nematode Infections in Coffee Plants

The Role of Arbuscular Mycorrhizal Fungi Against Root-Knot Nematode Infections in Coffee Plants

Comparative proteomics of three Chinese potato cultivars to improve understanding of potato molecular response to late blight disease

Impact of Plant-Associated Bacteria on the In Vitro Growth and Pathogenic Resistance against Phellinus tremulae of Different Aspen (Populus) Genotypes

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