Publications by authors named "P E Gundel"
Article Synopsis
- Plants often thrive in their environments not just because of their genetics, but also through partnerships with fungal endophytes, which are fungi living inside the plants.
- The study examined two Antarctic plant species, Colobanthus quitensis and Deschampsia antarctica, to see how these fungal relationships affect plant adaptation and survival in different habitats (hills vs. coast).
- Findings showed that while both plants shared similar fungal diversity, C. quitensis had a broader, more flexible relationship with fungi, whereas D. antarctica formed specific, beneficial interactions with fungi mainly in coastal areas, highlighting different strategies for adapting to extreme environments.
Background: Chlorsulfuron resistance and genetic dominance was evaluated in Raphanus raphanistrum genotypes homozygous (122-RR, 376-RR), heterozygous (122-RS, 376-RS) and compound heterozygous (122-R/376-R) for the target-site resistance mutations Ala-122-Tyr and Asp-376-Glu in the AHAS (acetohydroxyacid synthase) gene.
Results: At the AHAS level, 122-RR and 122-RS plants exhibited significantly higher I values than 376-RR and 376-RS plants, respectively. However, plants of the compound heterozygous genotype (122-R/376-R), showed no difference in AHAS activity compared to the 122-RS genotype but lower activity than the 122-RR genotype, and showed a nearly 400-fold greater I value than both genotypes (376-RR and 376-RS) carrying the 376-Glu allele.
Article Synopsis
- Plants often have to choose between growing bigger and defending themselves against pests.
- The Epichloë fungi help certain grasses grow without making them less resistant to bugs, which is a big deal.
- In experiments, grasses with Epichloë could grow more without getting eaten up by aphids, while non-fungi grasses weren't as lucky and attracted more aphids when they grew.
Background And Aims: In the subfamily Poöideae (Poaceae), certain grass species possess anti-herbivore alkaloids synthesized by fungal endophytes that belong to the genus Epichloë (Clavicipitaceae). The protective role of these symbiotic endophytes can vary, depending on alkaloid concentrations within specific plant-endophyte associations and plant parts.
Methods: We conducted a literature review to identify articles containing alkaloid concentration data for various plant parts in six important pasture species, Lolium arundinaceum, Lolium perenne, Lolium pratense, Lolium multiflorum|Lolium rigidum and Festuca rubra, associated with their common endophytes.
In agroecosystems, herbicides are the predominant anthropogenic selection pressure for agriculture weed species. While weeds are the primary target, herbicides can have adverse impacts on non-target plant beneficial microorganisms. We aimed to investigate the influence of a foliar endophytic fungus (Epichloë occultans) on the sensitivity of Lolium multiflorum to a graminicide herbicide (diclofop-methyl) during both plant ontogeny and progeny.
View Article and Find Full Text PDF