Sökning: "plant -pathogen interactions"

Visar resultat 16 - 20 av 273 avhandlingar innehållade orden plant -pathogen interactions.

1. 16. The role of regeneration in plant niche differentiation and habitat specialization

   Författare :Dirk-Jan ten Brink; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; seed mass; seed size; drought; shade; seed germination; seed dormancy; seedling establishment; plant community ecology; assembly rules; habitat specialization; plant recruitment; Regeneration; niche differentiation; phylogenetic independent contrasts; plant traits; soil fertility; comparative ecology;

   Sammanfattning : To predict the effects of environmental change and nature management on the distribution of plant species, it is crucial to understand the mechanisms of plant niche differentiation and habitat specialization. The importance to habitat specialization of particular plant traits and requirement of the regenerative phase of the plants life has received scanty interest. LÄS MER

3. 17. Abiotic stress and plant-microbe interactions in Norway spruce

   Författare :Julia Christa Haas; Vaughan Hurry; Nathaniel Street; Torgny Näsholm; Jennifer Baltzer; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Norway spruce; boreal forest; cold; drought; bacteria; fungi; plant-microbe interactions; climate change;

   Sammanfattning : Norway spruce (Picea abies) is a dominant tree species in boreal forests with extensive ecological and economic value. Climate change is threatening these ecosystems, with rising temperatures impacting cold hardening and increasing drought stress in regions experiencing lower precipitation. LÄS MER

4. 18. Little strokes fell great oaks : small RNA in potato and Phytophthora infestans interactions

   Författare :Kristian Persson Hodén; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Sammanfattning : Small RNAs (sRNAs) are non-coding RNAs of approximately 20-30 nucleotides in length. sRNAs bind to Argonaute proteins (AGOs) an integrated partner of the RISC complex. sRNAs act as templates for RISC to recognize complementary mRNA transcripts which can be cleaved by AGOs and thereby cause gene inactivity. LÄS MER

5. 19. Exploring the role of gene duplications in plant-insect interactions

   Författare :Hanna Nicole Dort; Christopher Wheat; Noah Whiteman; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; plant-insect interactions; comparative genomics; detoxification; transcriptomics; nitrile-specifier proteins; butterflies; populationsgenetik; Population Genetics;

   Sammanfattning : As evolutionary biologists, we are often curious about the genomic origins of our favorite adaptations. Although some innovations certainly arose de novo, many more originated through the process of whole-gene or within-gene duplication. LÄS MER

7. 20. Ecology and Evolution of Resistance to Herbivory : Trichome Production in Arabidopsis lyrata

   Författare :Geir Løe; Jon Ågren; Kari Lehtilä; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Plant-animal interactions; herbivory; trichomes; plant resistance; plant defense; divergent selection; local adaptation; GLABROUS1; evolution; matrix population models; LTRE; Biologi; Biology; Biologi;

   Sammanfattning : In this thesis, I examine variation in occurrence and performance of glabrous and trichome-producing plants of the perennial herb Arabidopsis lyrata. I combine field studies and genetic analysis to (1) examine the function of trichomes as a resistance character in natural populations, (2) compare the magnitude of population differentiation in trichome-production and at putatively neutral marker loci, (3) examine the molecular genetic basis of trichome-production, and (4) quantify the effects of herbivore removal on population growth and relative performance of glabrous and trichome-producing plants. LÄS MER