Kaktus berevolusi dengan cepat melalui perubahan bentuk bunga yang pesat, ungkap sebuah studi

Penelitian baru mengungkapkan bahwa kaktus termasuk di antara kelompok tanaman yang berevolusi paling cepat di Bumi, didorong oleh perubahan cepat pada bentuk bunga, bukan ukuran atau penyerbuknya. Temuan dari University of Reading ini menantang gagasan lama mengenai spesiasi yang sudah ada sejak zaman Darwin. Para ilmuwan menganalisis data dari lebih dari 750 spesies untuk mencapai kesimpulan tersebut.

Para peneliti di University of Reading meneliti data panjang bunga pada ratusan spesies kaktus. Mereka menemukan ukuran yang bervariasi mulai dari 2 milimeter hingga 37 sentimeter, namun variasi ini memiliki dampak kecil terhadap tingkat pembentukan spesies baru. Sebaliknya, kecepatan perubahan bentuk bunga muncul sebagai pendorong utama diversifikasi baik selama periode evolusi baru-baru ini maupun di masa lampau.

Artikel Terkait

Young millennial collector with rare variegated plants and online auction, capturing the boom in status-symbol houseplants.
Gambar dihasilkan oleh AI

Plant collecting surges as rare cultivars become status symbols

Dilaporkan oleh AI Gambar dihasilkan oleh AI

Collectors are racing to acquire rare plant cultivars and variegated leaves amid growing demand. Specialty nurseries offer limited preorders, while online auctions fuel bidding wars as spring nears. Younger buyers, particularly Gen Z and millennials, view these plants as symbols of individuality and lasting investment.

A study on the scarlet monkeyflower (Mimulus cardinalis) shows it recovered from a severe drought in California via rapid evolution, marking the first observed case of evolutionary rescue in the wild. Researchers led by Daniel Anstett at Cornell University tracked the plant's response to the 2012-2015 megadrought. While this offers hope for species facing climate change, experts note limitations for long-term adaptation.

Dilaporkan oleh AI

Extra copies of genetic material appear to have boosted the survival of flowering plants during Earth's major environmental crises, including the event that wiped out the dinosaurs.

Researchers at the Okinawa Institute of Science and Technology have revealed how squid and cuttlefish survived the Cretaceous-Paleogene mass extinction by retreating to oxygen-rich deep-sea refuges. Their analysis of newly sequenced genomes shows these cephalopods originated in the deep ocean over 100 million years ago, followed by rapid diversification into shallow waters. The findings, published in Nature Ecology & Evolution, provide the first comprehensive evolutionary tree for decapodiform cephalopods.

Dilaporkan oleh AI

Scientists have determined that structures once seen as traces of tiny animals in 540-million-year-old Brazilian rocks are actually fossilized communities of bacteria and algae. The reexamination uses advanced imaging to reveal preserved cells and organic material.

Researchers have discovered that aggressive green wall lizards, dubbed 'Hulk' lizards, are rapidly outcompeting and eliminating yellow and orange color morphs that coexisted for millions of years. The common wall lizard, Podarcis muralis, across the Mediterranean now shows only white-throated individuals in many populations. A study analyzing over 10,000 lizards revealed this shift in evolutionary dynamics.

Dilaporkan oleh AI

An international team including researchers from Cornell University, the Boyce Thompson Institute, the University of Edinburgh, and others has uncovered how hornwort plants use a modified protein, RbcS-STAR, to cluster the key photosynthetic enzyme Rubisco into pyrenoid-like compartments. This mechanism boosts carbon capture and could enhance crop yields by up to 60 percent while reducing needs for water and fertilizers.

 

 

 

Situs web ini menggunakan cookie

Kami menggunakan cookie untuk analisis guna meningkatkan situs kami. Baca kebijakan privasi kami untuk informasi lebih lanjut.
Tolak