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Deepak Haarith, Ph.D.

@deepakhaarith.bsky.social

Asst. Prof. of Nematology at University of Florida. #plants #microbes and their interactions - especially fond of #nematodes #fungi Love indulging in #rice and good arguments

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Deepak Haarith, Ph.D.@deepakhaarith.bsky.social · 5mo ago

Happy to share that my recent work on <i>Pratylenchus penetrans </i> and Soybeans is now published online as First Look. Open access article coming soon on Plant Disease @plantdisease.bsky.social @plantdiseasej.bsky.social apsjournals.apsnet.org/doi/epdf/10....

Soybean Rhg1 resistance to Heterodera glycines hinders the parasitism of Pratylenchus penetrans | Plant Disease

Rhg1 has been the most effective QTL deployed in soybeans (Glycine max) to control soybean cyst nematode (Heterodera glycines; SCN). However, the resistance mechanisms and specificity of Rhg1 towards SCN as opposed to other plant parasitic nematodes are not well known. In this study we report that Rhg1 can hinder the parasitism of the root lesion nematode Pratylenchus penetrans (Pp), which is commonly found along with SCN in northern U.S. soybean fields. Two elite public soybean varieties, carrying either rhg1-a + Rhg4 or rhg1-b, negatively impacted Pp populations measured at 30 dpi. This contribution of Rhg1 was more rigorously demonstrated using near isogenic lines for rhg1-b. Additionally, in three of the four soybean genetic backgrounds tested we observed significantly more Pp at 30 dpi when Pp were co-inoculated with SCN, consistent with a previous study. No significant changes in SCN cyst numbers upon co-inoculation with Pp were observed for any of the SCN-resistant rhg1 lines. No nematode-induced changes in Rhg1 transcript abundances were observed when sampling infected root sections in any of the plant genotypes, and no changes in a jasmonate response indicator were observed. However, the 3 dpi salicylate-mediated response to SCN or Pp became more robust during SCN + Pp co-infection. Multiple hypotheses for further dissection and manipulation of soybean resistance to Pratylenchus root lesion nematodes are suggested based on the present findings.

apsjournals.apsnet.org

Phytopathology®@phytopathology.bsky.social · 10mo ago

Nabin Poudel et al. conducted the first comprehensive evaluation of fluazaindolizine, fluensulfone, fluopyram, and oxamyl on motility, reproduction, and egg hatching in various root-knot nematode species.🪱 Learn more: https://doi.org/10.1094/PHYTO-01-25-0028-R

Differential Response of Meloidogyne enterolobii, M. floridensis, M. haplanaria, and M. incognita to Sublethal Doses of Nonfumigant Nematicides | Phytopathology®

Root-knot nematodes (RKNs; Meloidogyne spp.) are among the most widespread and damaging plant-parasitic nematodes known. Although M. incognita is the most prevalent RKN species, other species, including M. enterolobii, M. floridensis, and M. haplanaria,...

doi.org

Deepak Haarith, Ph.D.@deepakhaarith.bsky.social · last yr.

Overexpression of α-SNAPRhg1 Can Improve rhg1-a Mediated Soybean Resistance to Soybean Cyst Nematode | Phytopathology® apsjournals.apsnet.org/doi/10.1094/... #nematology #soybean

Overexpression of α-SNAPRhg1 Can Improve rhg1-a Mediated Soybean Resistance to Soybean Cyst Nematode | Phytopathology®

The rhg1-a and rhg1-b haplotypes of the soybean Rhg1 locus are economically effective tools for the control of soybean cyst nematode (SCN; Heterodera glycines), but ongoing SCN evolution requires impr...

apsjournals.apsnet.org

Deepak Haarith, Ph.D.@deepakhaarith.bsky.social · last yr.

I wrote down my learning as an international (Indian) graduate student in the USA, as a piece of advice. This could be useful to students and other academics alike? Let me know what you think! I hope this is helpful. #gradschool #newPI #international #studyabroad www.linkedin.com/pulse/indian...

Indian Grass Is NOT Browner Than Grass Abroad – AND Vice-versa (Graduate school advice)

Before I begin, I want to clarify that everything I’m about to share is drawn from my own experiences and from many honest conversations I’ve had with fellow Indian students — both in person and here ...

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