Laura Cooper

Laura Cooper

@transitionalform.bsky.social

Postdoc investigating the plants of the past at the University of Edinburgh, plants can be rocks too!

792 followers477 following122 posts

Laura Cooper reposted

Fabulous fragment of an ancient Egyptian wall relief with three bears and an oil jar. The paint has survived some 4,500 years! Limestone relief from the Pyramid Temple of Sahure, Old Kingdom, 5th Dynasty, c. 2496-2483 BC. Neues Museum, Berlin 📷 by me #ReliefWednesday #Archaeology

Laura Cooper reposted

Four days ago, a scientist was surprised by the news that Anthropic discovered new virus genes for making DNA. He says he’s been studying them for years—and feeding his data to Anthropic’s AI as part of his own research. Coincidence? Here’s my story. nyti.ms/3VSWayc

nyti.msDid Anthropic’s A.I. Really Make a Scientific Discovery on Its Own? (Gift Article)An expert at the University of Copenhagen said his team had been sharing its research with the company’s A.I. model, Claude, and that its new finding matched their work.

Laura Cooper reposted

#fossilfriday An example of why the ANSP and its collections must be saved. Atlantochelys mortoni, a giant protostegid sea turtle - named in 1849 by Agassiz based on the proximal humerus fragment. In 2012, someone found a large distal humerus that FIT ONTO THE SAME BONE in ANSP collections. 1/ 🦖🧪

Laura Cooper reposted

Laura Cooper reposted

Laura Cooper reposted

Do you, or someone you know, study carbon isotopes? If so, you need this paper: ⚛️🌱☁️ "A century of research on carbon isotope discrimination during photosynthesis: from early breakthroughs to future goals" (by me and @schubertba.bsky.social) #TansleyReview #PublishedArticle #OpenAccess

doi.orgA century of research on carbon isotope discrimination during photosynthesis: from early breakthroughs to future goalsAdvanced plant growth chambers quantified the dependency of carbon isotope fractionation on CO2 level, making possible the reconstruction of atmospheric CO2 across 500 million years of earth history ...

Laura Cooper reposted

Laura Cooper reposted

My privilege to share some lovely stories from the science community about what Sam Neill's timeless performance as Dr. Alan Grant in Jurassic Park meant to them—and why it will continue to inspire kids to chase their own discoveries for years to come.

wired.comSam Neill Inspired a Generation of ScientistsThe actor, who died at age 78 on Monday, embodied a passionate approach to research and positive masculinity in his role as paleontologist Alan Grant in the 1993 blockbuster Jurassic Park.

Laura Cooper reposted

🤔 Can a concept widely used in economics help us recognise alien life, from fossils on Mars to molecules in the outer solar system? A quick thread to explain a new paper from my research group : Can Pareto Optimality be Evidence of Life?, by Rodgers et al. 🧵 1/10 doi.org/10.1177/1531...

Laura Cooper reposted

Laura Cooper reposted

Call for Writers! 📣 Are you a student or early career researcher? Science communicator? Know someone who is? We're looking for our next round of Guest Bloggers for our journal blog The Paper Trail! Check out our vacancies page to apply, and read some of our latest posts here: buff.ly/7JVQmSx 🧪 🌍

Laura Cooper reposted

Laura Cooper reposted

Scientific American is 180 years old. The most eminent science magazine for the general public. And today, sold off as scrap to stop the staff from unionizing. Many top editors I've worked with for a decade on several articles have been fired. What a disgrace @sciam.bsky.social

Laura Cooper reposted

Congratulation @transitionalform.bsky.social @instmolplantsci.bsky.social for publishing the next chapter of your thesis @currentbiology.bsky.social ! Great work showing that the two fundamental vascular tissues - xylem and phloem evolved asynchronously. Read Laura's thread for more details 👇👇

Laura Cooper@transitionalform.bsky.social

Our paper on the origin and evolution of phloem, a big part of my PhD work, is out in Current Biology! www.sciencedirect.com/science/arti...

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This suggests that in the Rhynie chert plants, there was a tissue specialised in sugar conduction, but was distinct, and likely not as specialised and effective, as the phloem of extant vascular plants. 9/

Because the Rhynie chert plants include plants with xylem but without true phloem, this suggests that xylem and phloem did not have a common origin within the land plants, but rather both tissues evolved gradually and independently, occurring in their modern form in at different times. 10.

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These FCCs had some, but not all, of the features of phloem of extant vascular plants. The Rhynie chert plants didn't have a distinction between FCCs and cortical cells, or a boundary between these tissues, and the FCCs are very large in diameter compared to phloem cells. 7/

But we found that the FCCs of Asteroxylon did have (submicron!) sieve pores, which in extant plants is involved in the movement of sugars through the phloem, suggesting this tissue did have a sugar conduction specialisation. This is the earliest example of sieve pores in the fossil record. 8/

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The plant species preserved here include non-vascular plants that are close relatives of vascular plants, and plants that belong in modern groups, so they can be used to investigate the early evolution of major traits of vascular plants like phloem. 3/

I imaged the Rhynie chert plants using confocal laser scanning microscopy and scanning electron microscopy, two very high resolution imaging techniques that can be used to identify sub-micron features in these fossil plants. 4/

Phloem is the highly specialised sugar conducting tissue found in all living vascular plants, and it is today always occurs with xylem, the specialised water conducting tissue. Both of these tissues enabled plants to become larger and more complex, but how did these tissues evolve? 1/

To understand these sort of fundamental questions in plant evolution, we can examine the exceptionally preserved plants of the Rhynie chert, a 407 million year old fossil deposit where some of the earliest land plants are preserved through the activity of a hot spring. Art by Victor Leshyk. 2/