The Genome Sequence of Meloidogyne incognita Unveils Mechanisms of Adaptation to Plant-Parasitism in Metazoa

2009 ◽  
pp. 287-302 ◽  
Author(s):  
Etienne G.J. Danchin ◽  
Laetitia Perfus-Barbeoch
Keyword(s):  
Genome Sequence ◽  
Meloidogyne Incognita ◽  
Plant Parasitism ◽  
Mechanisms Of Adaptation

Differential feeding site development and reproductive fitness of Meloidogyne incognita and M. javanica on zucchini, a source of resistance to M. incognita

Nematology ◽  
2018 ◽  
Vol 20 (2) ◽  
pp. 187-199 ◽  
Author(s):  
Miguel Talavera-Rubia ◽  
Alejandro Pérez De Luque ◽  
Manuel López-Gómez ◽  
Soledad Verdejo-Lucas
Keyword(s):  
Meloidogyne Incognita ◽  
Giant Cells ◽  
Egg Laying ◽  
Post Inoculation ◽  
Critical Events ◽  
Feeding Site ◽  
Abnormal Growth ◽  
Plant Parasitism ◽  
Site Development ◽  
Juvenile Development

The development of Meloidogyne incognita and M. javanica on zucchini ‘Amalthee’ was compared to characterise critical events in plant parasitism. Meloidogyne incognita was much less successful parasitising zucchini than M. javanica despite similarities in penetration rates and juvenile development. The increased frequency of undersized individuals, immature females and empty galls evidenced a failure in M. incognita development. Meloidogyne incognita induced larger feeding sites that contained more and larger giant cells than did M. javanica. Malformation of the M. incognita giant cells and abnormal growth of the surrounding tissues was observed at both 11 and 25 days post-inoculation. Critical events in parasitism differentiating the nematode isolates were the transition from fourth-stage juveniles to females, and the reduced fertility of the egg-laying females. Zucchini can be considered a source of resistance to M. incognita because it restricted nematode proliferation by supporting less fertile egg-laying females and producing fewer egg masses and total eggs.

scholarly journals Genome Sequence of Delftia acidovorans HK171, a Nematicidal Bacterium Isolated from Tomato Roots

2017 ◽  
Vol 5 (9) ◽  
Author(s):  
Jae Woo Han ◽  
Mira Oh ◽  
Gyung Ja Choi ◽  
Hun Kim
Keyword(s):  
Genome Sequence ◽  
Meloidogyne Incognita ◽  
Nematicidal Activity ◽  
Circular Chromosome ◽  
Content Type ◽  
Delftia Acidovorans ◽  
Tomato Roots

ABSTRACT Delftia acidovorans strain HK171, isolated from tomato roots, exhibited nematicidal activity against Meloidogyne incognita. Here, we present the genome sequence of D. acidovorans strain HK171, which consists of one circular chromosome of 6,430,384 bp, with 66.9% G+C content.

scholarly journals Genome Sequence of Striga asiatica Provides Insight into the Evolution of Plant Parasitism

2019 ◽  
Vol 29 (18) ◽  
pp. 3041-3052.e4 ◽  
Author(s):  
Satoko Yoshida ◽  
Seungill Kim ◽  
Eric K. Wafula ◽  
Jaakko Tanskanen ◽  
Yong-Min Kim ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Striga Asiatica ◽  
Plant Parasitism ◽  
Insight Into

scholarly journals Genome Sequence of Exiguobacterium antarcticum B7, Isolated from a Biofilm in Ginger Lake, King George Island, Antarctica

2012 ◽  
Vol 194 (23) ◽  
pp. 6689-6690 ◽  
Author(s):  
Adriana Ribeiro Carneiro ◽  
Rommel Thiago Jucá Ramos ◽  
Hivana Dall'Agnol ◽  
Anne Cybelle Pinto ◽  
Siomar de Castro Soares ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Antarctic Peninsula ◽  
Low Temperatures ◽  
Microbial Mats ◽  
King George Island ◽  
Content Type ◽  
Lake Fryxell ◽  
Mechanisms Of Adaptation ◽  
First Time ◽  
Exiguobacterium Antarcticum

ABSTRACTExiguobacterium antarcticumis a psychotropic bacterium isolated for the first time from microbial mats of Lake Fryxell in Antarctica. Many organisms of the genusExiguobacteriumare extremophiles and have properties of biotechnological interest, e.g., the capacity to adapt to cold, which make this genus a target for discovering new enzymes, such as lipases and proteases, in addition to improving our understanding of the mechanisms of adaptation and survival at low temperatures. This study presents the genome ofE. antarcticumB7, isolated from a biofilm sample of Ginger Lake on King George Island, Antarctic peninsula.

scholarly journals Draft Genome Sequence of Pediococcus acidilactici Strain LPBC161, Isolated from Mature Coffee Cherries during Natural Fermentation

2019 ◽  
Vol 8 (16) ◽  
Author(s):  
Elisângela S. M. Muynarsk ◽  
Gilberto V. de Melo Pereira ◽  
Dany Mesa ◽  
Vanete Thomaz-Soccol ◽  
Júlio C. Carvalho ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Lactic Acid Bacterium ◽  
Genome Sequence ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Pediococcus Acidilactici ◽  
Content Type ◽  
Natural Fermentation ◽  
Mechanisms Of Adaptation

Here, we report the draft genome sequence of Pediococcus acidilactici strain LPBC161, a lactic acid bacterium isolated from mature coffee cherries in Brazil. The genome sequence of P. acidilactici LPBC161 provides valuable information on the mechanisms of adaptation and metabolism of lactic acid bacteria (LAB) in the environment and stressor factors of coffee processing.

scholarly journals The Mi-EFF1/Minc17998 effector interacts with the soybean GmHub6 protein to promote host plant parasitism by Meloidogyne incognita

2020 ◽  
Author(s):  
Reneida Aparecida Godinho Mendes ◽  
Marcos Fernando Basso ◽  
Bruno Paes de Melo ◽  
Rayane Nunes Lima ◽  
Janaina Fernandes de Araújo ◽  
...  
Keyword(s):  
Meloidogyne Incognita ◽  
Defense Response ◽  
Orthologous Gene ◽  
Immune Defense ◽  
Nematode Infection ◽  
Root Knot Nematode ◽  
Vegetative Development ◽  
Plant Parasitism

Abstract Background: Meloidogyne incognita is the most frequently reported species from the root-knot nematode (RKN) complex responsible for causing damage in several different crops worldwide. The interaction between M. incognita and host plants involves the secretions of molecular factors from the nematode, which mainly suppress the defense response and promote plant parasitism. On the other hand, several plant elements are associated with the immune defense system that opposes nematode infection.Results: In this study, the interaction of the Mi-EFF1/Minc17998 effector with the soybean GmHub6 (Glyma.17G099100; TCP14) protein was identified and characterized in vitro and in vivo. Data showed that the GmHub6 gene is upregulated by M. incognita infection in a nematode-resistant soybean cultivar (PI595099) compared to a susceptible cultivar (BRS133). Accordingly, the Arabidopsis thaliana AtHub6 mutant line (AT3G47620, orthologous gene of GmHub6 displayed normal vegetative development of the plant but was more susceptible to M. incognita. Thus, since the soybean and A. thaliana Hub6 proteins are TEOSINTE BRANCHED/CYCLOIDEA/PCF (TCP) transcription factors involved in plant development and morphogenesis modulation, flowering time regulation, and the activation of the plant immune system, our data suggest that the interaction of Mi-EFF1/Minc17998 and Hub6 proteins is associated with an increase in plant susceptibility to nematode infection during parasitism. It is suggested that this interaction may prevent the nuclear localization or disturb the activity of GmHub6 as a typical transcription factor modulating the cell cycle of the plant, avoid the activation of the host’s defense response, and successfully promote parasitism.Conclusion: Our findings indicate the potential of the Mi-EFF1/Minc17998 effector for the development of biotechnological tools based on the approaches of RNA interference and GmHub6 gene overexpression for RKN control.

scholarly journals The Mi-EFF1/Minc17998 effector interacts with the soybean GmHub6 protein to promote host plant parasitism by Meloidogyne incognita

2020 ◽  
Author(s):  
Reneida Aparecida Godinho Mendes ◽  
Marcos Fernando Basso ◽  
Bruno Paes de Melo ◽  
Rayane Nunes Lima ◽  
Janaina Fernandes de Araújo ◽  
...  
Keyword(s):  
Meloidogyne Incognita ◽  
Defense Response ◽  
Orthologous Gene ◽  
Immune Defense ◽  
Nematode Infection ◽  
In Planta ◽  
Root Knot Nematode ◽  
Vegetative Development ◽  
Plant Parasitism

Abstract Background: Meloidogyne incognita is the most frequently reported species from the root-knot nematode (RKN) complex responsible for causing damage in several different crops worldwide. The interaction between M. incognita and host plants involves the secretions of molecular factors from the nematode, which mainly suppress the defense response and promote plant parasitism. On the other hand, several plant elements are associated with the immune defense system that opposes nematode infection. Results: In this study, the interaction of the Mi-EFF1/Minc17998 effector with the soybean GmHub6 (Glyma.17G099100; TCP14) protein was identified and characterized in vivo and in planta. Data showed that the GmHub6 gene is upregulated by M. incognita infection in a nematode-resistant soybean cultivar (PI595099) compared to a susceptible cultivar (BRS133). Accordingly, the Arabidopsis thaliana AtHub6 mutant line (AT3G47620, orthologous gene of GmHub6 displayed normal vegetative development of the plant but was more susceptible to M. incognita. Thus, since the soybean and A. thaliana Hub6 proteins are TEOSINTE BRANCHED/CYCLOIDEA/PCF (TCP) transcription factors involved in plant development and morphogenesis modulation, flowering time regulation, and the activation of the plant immune system, our data suggest that the interaction of Mi-EFF1/Minc17998 and Hub6 proteins is associated with an increase in plant susceptibility to nematode infection during parasitism. It is suggested that this interaction may prevent the nuclear localization or disturb the activity of GmHub6 as a typical transcription factor modulating the cell cycle of the plant, avoid the activation of the host’s defense response, and successfully promote parasitism. Conclusion: Our findings indicate the potential of the Mi-EFF1/Minc17998 effector for the development of biotechnological tools based on the approaches of RNA interference and GmHub6 gene overexpression for RKN control.

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