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Science

by Bossett @bossett.social

The Science Feed. A curated feed from Bluesky professional scientists, science communicators, and science/nature photographer/artists. See https://l.bossett.io/vkeNf for more information! 🧪

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SETI Institute @setiinstitute.bsky.social · 8 minutes ago
Dr. Madelyne Willis is a microbial ecologist with extensive field experience, including multiple deployments to the Arctic and Antarctic. Her research has focused on identifying metabolic activity in bacterial cells in glacial ice and other cold environments. 🧪 🔭 👩‍🔬 #Astrobiology #NotJustAliens
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Dani cRabaiotti 🦀 @danirabaiotti.bsky.social · over 2 years ago
Welcome to the Science feed! Please read our FAQs for instructions for how to be added as a contributor: bossett.io/science-feed/ Mod introductory posts linked below⬇️ Use the test tube emoji on posts you want to appear in the feed🧪 Please like the feed and make sure you follow our feed rules:
Science Feed Rules: 🧪 No misinformation 🧪 Keep posts relevant to science 🧪 Use alt text 🧪 Credit images 🧪 Give context to links to external sites 🧪 Have fun!
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Greg Priest @gregpriest.bsky.social · 19 minutes ago
Because plants move so slowly relative to human time scales, Darwin developed a diagrammatic system to make their movements more easily perspicuous to us. Below is a cartoon of the apparatus, and one of Darwin’s diagrams. 🧪🌱🐋 #philsci #HistSTM 🦋🦫
Movement diagram from Darwin Online.
Apparatus diagram drawn by Keith Roberts, from Darwin and his Flowers by Mea Allen (1977).

It was no “mere” metaphor: “plants do not possess nerves or a central nervous system; and we may infer that with animals such structures serve only for the more perfect transmission of impressions, and for the more complete intercommunication of the several parts." 🧪🌱🐋 #philsci #HistSTM 🦋🦫
Figure from the book showing the phenomenon of sleep in plants.
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Greg Priest @gregpriest.bsky.social · 22 minutes ago
It was no “mere” metaphor: “plants do not possess nerves or a central nervous system; and we may infer that with animals such structures serve only for the more perfect transmission of impressions, and for the more complete intercommunication of the several parts." 🧪🌱🐋 #philsci #HistSTM 🦋🦫
Figure from the book showing the phenomenon of sleep in plants.

OTD (ok, yesterday) in 1880, Charles Darwin published The Power of Movement in Plants. D believed that plants are active agents in the world: “A radicle may be compared with a burrowing animal such as a mole, which wishes to penetrate perpendicularly down into the ground.” 🧪🌱🐋 #philsci #HistSTM 🦋🦫
Cover, title page, and page of figures from the book.
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Greg Priest @gregpriest.bsky.social · 24 minutes ago
OTD (ok, yesterday) in 1880, Charles Darwin published The Power of Movement in Plants. D believed that plants are active agents in the world: “A radicle may be compared with a burrowing animal such as a mole, which wishes to penetrate perpendicularly down into the ground.” 🧪🌱🐋 #philsci #HistSTM 🦋🦫
Cover, title page, and page of figures from the book.
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Journal of Experimental Botany @jxbotany.bsky.social · about 1 hour ago
🌾🌊 REVIEW 🌊🌾 This review integrates anaerobic germination and submergence tolerance mechanisms and proposes stage-specific breeding that combines locus pyramiding, genomic selection, and cis-regulatory editing to achieve dual-stage flood-resilient rice - Lamsal et al. #PlantScience 🧪
Fig. 1.Distinct physiological strategies underlying anaerobic germination (AG) and submergence tolerance (SubTol) in rice. AG operates during seedling establishment, where ethylene and auxin accumulation and ABA inactivation promote carbohydrate mobilization and coleoptile elongation under submergence, representing an escape strategy. In contrast, SubTol functions later in the vegetative stage and relies on opposite responses to flooding. In this quiescence strategy, reduced ethylene and auxin accumulation and increased abscisic acid responsiveness suppress shoot elongation, conserve carbohydrate reserves, and avoid starvation, thereby promoting survival during prolonged submergence and enabling rapid recovery after de-submergence. Induced ethanolic fermentation and enhanced reactive oxygen species (ROS) detoxification are common protective mechanisms contributing to both AG and SubTol.
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