Chemical Hide and Seek: Nematode's Journey to Its Plant Host

Hamada, Natalie; Yimer, Henok Zemene; Williamson, Valerie M.; Siddique, Shahid

doi:10.1016/j.molp.2020.03.005

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…The giant cells can provide nematodes with various nutrients and support their growth and development by intranuclear replication [ 47 ]. The giant cells are surrounded by bast and xylem and cortical cells which gradually produce swollen root knots in the roots [ 48 ]. Our observations of the PsoRPM3 -transformed tobacco roots showed fewer giant cells in the transgenic roots than the control, and giant cell development was delayed, ultimately leading to a failure to form eggs.…”

Section: Discussionmentioning

confidence: 99%

Transcription Factor Pso9TF Assists Xinjiang Wild Myrobalan Plum (Prunus sogdiana) PsoRPM3 Disease Resistance Protein to Resist Meloidogyne incognita

Zhu

Xiao

et al. 2021

Plants

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The root-knot nematode (Meloidogyne incognita) causes huge economic losses in the agricultural industry throughout the world. Control methods against these polyphagous plant endoparasites are sparse, the preferred one being the deployment of plant cultivars or rootstocks bearing resistance genes against Meloidogyne species. Our previous study has cloned one resistance gene, PsoRPM3, from Xinjiang wild myrobalan plum (Prunus sogdiana). However, the function of PsoRPM3 remains elusive. In the present study, we have investigated the regulatory mechanism of PsoRPM3 in plant defense responses to M. incognita. Our results indicate that fewer giant cells were detected in the roots of the PsoRPM3 transgenic tobacco than wild tobacco lines after incubation with M. incognita. Transient transformations of full-length and TN structural domains of PsoRPM3 have induced significant hypersensitive responses (HR), suggesting that TIR domain might be the one which caused HR. Further, yeast two-hybrid results revealed that the full-length and LRR domain of PsoRPM3 could interact with the transcription factor Pso9TF. The addition of Pso9TF increased the ROS levels and induced HR. Thus, our data revealed that the LRR structural domain of PsoRPM3 may be associated with signal transduction. Moreover, we did not find any relative inductions of defense-related genes PsoEDS1, PsoPAD4 and PsoSAG101 in P. sogdiana, which has been incubated with M. incognita. In summary, our work has shown the key functional domain of PsoRPM3 in the regulation of defense responses to M. incognita in P. sogdiana.

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Section: Discussionmentioning

confidence: 99%

Transcription Factor Pso9TF Assists Xinjiang Wild Myrobalan Plum (Prunus sogdiana) PsoRPM3 Disease Resistance Protein to Resist Meloidogyne incognita

Zhu

Xiao

et al. 2021

Plants

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“…Plant-parasitic nematodes (PPNs) are one of the most difficult crop pathogens to manage that globally inflict a heavy toll in major food crops amounting to more than 100 billion US$ economic loss [ 1 ]. Rice and wheat constitute the major staple diet of global population; >50% of global population consumes rice.…”

Section: Introductionmentioning

confidence: 99%