Global abundance of microbial rhodopsins

Omri M. Finkel, Oded Béjà, Shimshon Belkin

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

Photochemical reaction centers and rhodopsins are the only phototrophic mechanisms known to have evolved on Earth. The minimal cost of bearing a rhodopsin-based phototrophic mechanism in comparison to maintaining a photochemical reaction center suggests that rhodopsin is the more abundant of the two. We tested this hypothesis by conducting a global abundance calculation of phototrophic mechanisms from 116 marine and terrestrial microbial metagenomes. On average, 48% of the cells from which these metagenomes were generated harbored a rhodopsin gene, exceeding the reaction center abundance by threefold. Evidence from metatranscriptomic data suggests that this genomic potential is realized to a substantial extent, at least for the small-sized (>0.8 μm) of microbial fractions.

اللغة الأصليةإنجليزيّة أمريكيّة
الصفحات (من إلى)448-451
عدد الصفحات4
دوريةISME Journal
مستوى الصوت7
رقم الإصدار2
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - مارس 2013

All Science Journal Classification (ASJC) codes

  • !!Microbiology
  • !!Ecology, Evolution, Behavior and Systematics

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