Variations in Root System Architecture Responses to Meloidogyne enterolobii and Meloidogyne incognita Parasitism in Sweetpotato Genotypes
In sweetpotato (Ipomoea batatas), the emergence and development of lateral roots (LRs) is crucial for determining the root system architecture (RSA), which impacts plant establishment, storage root formation, and yield potential. This study evaluated RSA responses of five sweetpotato genotypes to Me...
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American Society for Horticultural Science (ASHS)
2025-04-01
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| Series: | HortScience |
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| author | David Galo Arthur Villordon Tristan T. Watson |
| author_facet | David Galo Arthur Villordon Tristan T. Watson |
| author_sort | David Galo |
| collection | DOAJ |
| description | In sweetpotato (Ipomoea batatas), the emergence and development of lateral roots (LRs) is crucial for determining the root system architecture (RSA), which impacts plant establishment, storage root formation, and yield potential. This study evaluated RSA responses of five sweetpotato genotypes to Meloidogyne enterolobii or Meloidogyne incognita infection. The genotypes included ‘Beauregard’ (susceptible to both nematodes), ‘Jewel’ (resistant to M. enterolobii and moderately resistant to M. incognita), and Louisiana State University Agricultural Center genotypes LA14-31 (resistant to M. enterolobii and moderately resistant to M. incognita), LA18-100 (susceptible to M. enterolobii and resistant to M. incognita), and LA19-65 (resistant to M. enterolobii and susceptible to M. incognita). Sweetpotato vine cuttings were inoculated at planting with approximately 3000, 500, or no eggs of either nematode species. Entire root systems were collected at 14 and 21 days postinoculation (DPI) and scanned. Images were analyzed using RhizoVision Explorer software. Gall counts per root system and RSA attributes such as lateral root length, surface area, and volume were evaluated. Variations in gall formation and RSA attributes among genotypes were observed as early as 14 DPI and continued at 21 DPI, with LA18-100 (released as ‘Avoyelles’) showing consistently greater lateral root length, surface area, and volume compared with those of the other genotypes. The RSA response to varying nematode inoculum densities was genotype-specific and not linked to the resistance response to M. enterolobii or M. incognita. The incorporation of RSA attributes into sweetpotato breeding programs has potential for identifying genotypes with favorable rooting characteristics. |
| format | Article |
| id | doaj-art-19eec5f0ce314bffb28029a08cebae7c |
| institution | OA Journals |
| issn | 2327-9834 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | American Society for Horticultural Science (ASHS) |
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| series | HortScience |
| spelling | doaj-art-19eec5f0ce314bffb28029a08cebae7c2025-08-20T02:27:45ZengAmerican Society for Horticultural Science (ASHS)HortScience2327-98342025-04-01605https://doi.org/10.21273/HORTSCI18398-24Variations in Root System Architecture Responses to Meloidogyne enterolobii and Meloidogyne incognita Parasitism in Sweetpotato GenotypesDavid Galo0Arthur Villordon1Tristan T. Watson2Department of Plant Pathology and Crop Physiology, Louisiana State University Agricultural CenterSweet Potato Research Station, Louisiana State University Agricultural CenterDepartment of Plant Pathology and Crop Physiology, Louisiana State University Agricultural CenterIn sweetpotato (Ipomoea batatas), the emergence and development of lateral roots (LRs) is crucial for determining the root system architecture (RSA), which impacts plant establishment, storage root formation, and yield potential. This study evaluated RSA responses of five sweetpotato genotypes to Meloidogyne enterolobii or Meloidogyne incognita infection. The genotypes included ‘Beauregard’ (susceptible to both nematodes), ‘Jewel’ (resistant to M. enterolobii and moderately resistant to M. incognita), and Louisiana State University Agricultural Center genotypes LA14-31 (resistant to M. enterolobii and moderately resistant to M. incognita), LA18-100 (susceptible to M. enterolobii and resistant to M. incognita), and LA19-65 (resistant to M. enterolobii and susceptible to M. incognita). Sweetpotato vine cuttings were inoculated at planting with approximately 3000, 500, or no eggs of either nematode species. Entire root systems were collected at 14 and 21 days postinoculation (DPI) and scanned. Images were analyzed using RhizoVision Explorer software. Gall counts per root system and RSA attributes such as lateral root length, surface area, and volume were evaluated. Variations in gall formation and RSA attributes among genotypes were observed as early as 14 DPI and continued at 21 DPI, with LA18-100 (released as ‘Avoyelles’) showing consistently greater lateral root length, surface area, and volume compared with those of the other genotypes. The RSA response to varying nematode inoculum densities was genotype-specific and not linked to the resistance response to M. enterolobii or M. incognita. The incorporation of RSA attributes into sweetpotato breeding programs has potential for identifying genotypes with favorable rooting characteristics.https://journals.ashs.org/hortsci/view/journals/hortsci/60/5/article-p741.xmlmeloidogyne enterolobiimeloidogyne incognitaroot system architecturesweetpotato |
| spellingShingle | David Galo Arthur Villordon Tristan T. Watson Variations in Root System Architecture Responses to Meloidogyne enterolobii and Meloidogyne incognita Parasitism in Sweetpotato Genotypes HortScience meloidogyne enterolobii meloidogyne incognita root system architecture sweetpotato |
| title | Variations in Root System Architecture Responses to Meloidogyne enterolobii and Meloidogyne incognita Parasitism in Sweetpotato Genotypes |
| title_full | Variations in Root System Architecture Responses to Meloidogyne enterolobii and Meloidogyne incognita Parasitism in Sweetpotato Genotypes |
| title_fullStr | Variations in Root System Architecture Responses to Meloidogyne enterolobii and Meloidogyne incognita Parasitism in Sweetpotato Genotypes |
| title_full_unstemmed | Variations in Root System Architecture Responses to Meloidogyne enterolobii and Meloidogyne incognita Parasitism in Sweetpotato Genotypes |
| title_short | Variations in Root System Architecture Responses to Meloidogyne enterolobii and Meloidogyne incognita Parasitism in Sweetpotato Genotypes |
| title_sort | variations in root system architecture responses to meloidogyne enterolobii and meloidogyne incognita parasitism in sweetpotato genotypes |
| topic | meloidogyne enterolobii meloidogyne incognita root system architecture sweetpotato |
| url | https://journals.ashs.org/hortsci/view/journals/hortsci/60/5/article-p741.xml |
| work_keys_str_mv | AT davidgalo variationsinrootsystemarchitectureresponsestomeloidogyneenterolobiiandmeloidogyneincognitaparasitisminsweetpotatogenotypes AT arthurvillordon variationsinrootsystemarchitectureresponsestomeloidogyneenterolobiiandmeloidogyneincognitaparasitisminsweetpotatogenotypes AT tristantwatson variationsinrootsystemarchitectureresponsestomeloidogyneenterolobiiandmeloidogyneincognitaparasitisminsweetpotatogenotypes |