{"id":2054,"date":"2024-08-20T12:52:00","date_gmt":"2024-08-20T19:52:00","guid":{"rendered":"https:\/\/ackerman.sdsu.edu\/biology\/?p=2054"},"modified":"2024-10-10T11:43:47","modified_gmt":"2024-10-10T18:43:47","slug":"methane-cycling-in-arid-soils-methanotrophic-microbiomes-and-associations-with-plants","status":"publish","type":"post","link":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/methane-cycling-in-arid-soils-methanotrophic-microbiomes-and-associations-with-plants\/","title":{"rendered":"Methane Cycling in Arid Soils: Methanotrophic Microbiomes and Associations with Plants"},"content":{"rendered":"\n
\n
\n
\n
\"Closeup<\/figure>\n<\/figure>\n<\/div>\n\n\n\n
\n
\n

Nathalie Delherbe<\/strong><\/h2>\n\n\n\n

Program: <\/strong>Joint Doctoral Program in Cell and Molecular Biology
Date:<\/strong> Tuesday, August 20, 2024
Time:<\/strong> 1:00 PM
Location:<\/strong> Scripps Institution of Oceanography, Eckart Building 8755, (next to Pinpoint cafe), Room 127 “Sea Cave” 
Zoom: <\/strong>https:\/\/SDSU.zoom.us\/j\/3296891163?omn=87968087162<\/a><\/p>\n<\/div>\n\n\n\n

\n
\n

Committee Members<\/h2>\n\n\n\n
    \n
  • Dr. Marina G. Kalyuzhnaya, Chair, SDSU<\/li>\n\n\n\n
  • Dr. Elizabeth R. Waters, SDSU<\/li>\n\n\n\n
  • Dr. Nicholas Barber, SDSU<\/li>\n\n\n\n
  • Dr. Eric E. Allen, UCSD<\/li>\n\n\n\n
  • Dr. Jack Gilbert, UCSD<\/li>\n<\/ul>\n\n\n\n

    Abstract<\/h2>\n\n\n\n

    This work takes the first steps towards linking symbiotic associations of microbes to desert plants with global methane cycling. Drylands occupy 37.1% of the Earth\u2019s terrestrial surface and are increasingly being converted into agricultural fields. Sustainable and productive use of arid land requires a better understanding of the functional traits of microbes inhabiting native arid environments.<\/p>\n\n\n\n

    To improve our knowledge of native arid ecosystem functioning, we performed preliminary studies with soil samples collected from Anza-Borrego Desert State Park. The following discoveries were made: 1) Metagenomic data identified the methanotrophic bacteria Methylocaldum sp. as the predominant genus within the methanotrophic community in vegetated and unvegetated soil of the Anza-Borrego desert. 2) The consumption rate of atmospheric methane positively correlated with the presence of vegetation; 3) Genome annotations of methanotrophs from the rhizosphere of desert plants highlight several functions that can contribute to interactions with plants; 4) Methanotrophs have the potential to improve plant survival during drought stress.<\/p>\n\n\n\n

    Based on these data we propose that in arid environments plants facilitate methane transport to the ground and cooperate with methane-consuming microbes to capture methane efficiently evolved in deeper soil layers and atmospheric methane (i.e. reverse chimney), which is then metabolized to provide supplemental resources for survival in water-limiting conditions.<\/p>\n\n\n\n

    The results suggest that the plant-methanotroph associations represent an overlooked sink of atmospheric methane in dryland ecosystems. We show that supplementation with native Methylocaldum isolates from the Anza-Borrego Desert can potentially improve crop drought tolerance (e.g. Sorghum). <\/p>\n\n\n\n

    Furthermore, this work provides essential evidence that targeted engineering of association between crops and methanotrophs in dryland soils can enhance atmospheric methane sink, ultimately influencing the global climate.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

    <\/p>\n","protected":false},"excerpt":{"rendered":"

    Nathalie Delherbe | Tuesday, August 20, 2024.<\/p>\n","protected":false},"author":6,"featured_media":2280,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-2054","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dissertation-cmb"],"_links":{"self":[{"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/posts\/2054","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/comments?post=2054"}],"version-history":[{"count":5,"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/posts\/2054\/revisions"}],"predecessor-version":[{"id":2283,"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/posts\/2054\/revisions\/2283"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/media\/2280"}],"wp:attachment":[{"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/media?parent=2054"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/categories?post=2054"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/biology.sdsu.edu\/doctoral\/cell-molecular\/wp-json\/wp\/v2\/tags?post=2054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}