{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,18]],"date-time":"2026-07-18T07:33:22Z","timestamp":1784360002613,"version":"3.55.0"},"reference-count":59,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T00:00:00Z","timestamp":1762905600000},"content-version":"vor","delay-in-days":11,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Physiologia Plantarum"],"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Cyanobacteria and algae are the major photosynthetic organisms in deserts because they survive desiccation, high solar radiation and extreme temperature fluctuations better than other plants. Under favourable conditions, desert cyanobacteria and algae evidently photosynthesise. However, our understanding of whether each group modulates this metabolic process in response to preceding harsh conditions remains limited. To find out the effect of aridity on the photosynthetic activity of desert cyanobacteria and algae, we compared their cellular biovolume\u2010specific carbon dioxide (CO\n                    <jats:sub>2<\/jats:sub>\n                    ) fixation in the hyper\u2010arid and arid regions of a typical hot desert\u2014the central Negev Desert. We found that the biovolume\u2010specific CO\n                    <jats:sub>2<\/jats:sub>\n                    fixation of both cyanobacteria and algae was highly variable rather than being constant. The values ranged from 20 to 40 folds, with 3\u20134 values out &gt;\u200980 being similarly high. In response to aridity, at least a third of cyanobacteria and algae had low CO\n                    <jats:sub>2<\/jats:sub>\n                    fixation activity (&lt;\u200920% of the maximal rate) and contributed merely ~10% of the total CO\n                    <jats:sub>2<\/jats:sub>\n                    fixation. Less than a quarter of cyanobacteria and algae fixed CO\n                    <jats:sub>2<\/jats:sub>\n                    at a high rate (&gt;\u200940% of the maximal rate) and, hence, were responsible for the bulk of CO\n                    <jats:sub>2<\/jats:sub>\n                    fixation in the desert. Because the taxonomic composition of cyanobacterial and algal assemblages in the Negev is typical of biocrusts of the drylands, the aridity\u2010dependent dynamic of photosynthetic activity revealed in the Negev is likely a general trait for desert cyanobacteria and algae.\n                  <\/jats:p>","DOI":"10.1111\/ppl.70634","type":"journal-article","created":{"date-parts":[[2025,11,13]],"date-time":"2025-11-13T02:45:21Z","timestamp":1763001921000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A Minority of Desert Cyanobacteria and Algae Is Responsible for the Bulk of\n                    <scp>\n                      CO\n                      <sub>2<\/sub>\n                    <\/scp>\n                    Fixation"],"prefix":"10.1111","volume":"177","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-3717-2201","authenticated-orcid":false,"given":"Khin Maw","family":"Kyi","sequence":"first","affiliation":[{"name":"Kreitman School of Advanced Graduate Studies Ben\u2010Gurion University of the Negev  Beer Sheva Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7723-6810","authenticated-orcid":false,"given":"Mikhail V.","family":"Zubkov","sequence":"additional","affiliation":[{"name":"French Associates Institute for Agriculture and Biotechnology, Blaustein Institutes for Desert Research Ben\u2010Gurion University of the Negev  Midreshet Ben\u2010Gurion Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7736-8522","authenticated-orcid":false,"given":"Nina A.","family":"Kamennaya","sequence":"additional","affiliation":[{"name":"French Associates Institute for Agriculture and Biotechnology, Blaustein Institutes for Desert Research Ben\u2010Gurion University of the Negev  Midreshet Ben\u2010Gurion Israel"},{"name":"Goldman Sonnenfeldt School of Sustainability and Climate Change Ben\u2010Gurion University of the Negev  Beer Sheva Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,11,12]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/2041-210X.12963"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1099390"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/hyp.6325"},{"key":"e_1_2_8_5_1","volume-title":"Biological Soil Crusts: Structure, Function, and Management, Ecological Studies","author":"Belnap J.","year":"2001"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00442-003-1438-6"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-319-30214-0_1"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1038\/ismej.2014.148"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.2307\/1930007"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00248-008-9449-9"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1038\/nmeth.3869"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.2307\/40025031"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.11646\/phytotaxa.324.1.1"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-319-46261-5_1"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1080\/07352689991309199"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1093\/nar\/gkr1178"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-4615-0697-3"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1007\/s004250050439"},{"issue":"6","key":"e_1_2_8_19_1","first-page":"1","article-title":"Cyanobacterial Populations in Biological Soil Crusts of the Northwest Negev Desert, Israel\u2010Effects of Local Conditions and Disturbance","volume":"93","author":"Hagemann M.","year":"2017","journal-title":"FEMS Microbiology Ecology"},{"key":"e_1_2_8_20_1","volume-title":"Photosynthesis","author":"Hall D. 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