Highly developed seed plants evolved deep root systems that are able to sense Earth’s gravity. The how and when of this evolutionary step has, until now, remained unknown. Plant biologists at the Institute of Science and Technology Austria (IST Austria) have identified crucial components and processes which only developed in seed plants around 350 million years ago to enable fast and efficient gravity-driven root growth. The results have been published in the journal Nature Communications.
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Source: Phys.org