University of California Agriculture and Natural Resources released on Mar. 22 an article detailing how plants have developed various methods to retain water and survive in challenging environments, particularly in California’s dry climate.
The topic is important as California experiences long dry seasons, making water conservation critical for both native plants and human communities. The article explains that early land plants appeared around 500 million years ago, initially thriving only in moist environments before evolving vascular systems that allowed them to colonize drier areas.
Plants lose water through a process called transpiration, where microscopic pores known as stomata release water vapor from leaves. The sun powers this cycle by drawing water from the soil up through the plant. In regions like California with wet winters and dry summers, native plants have adapted by developing strategies to either resist or evade drought. Dawn Kooyumjian, Volunteer Coordinator for the UC Master Gardener Program of Contra Costa County, said that “plants employ two main strategies: drought-resisting and drought-evading.” She explained that drought-resisting plants often have tough or waxy leaves, fewer stomata, or store water in stems. Drought-evading species may use bulbs for underground storage or shed their leaves during summer.
University of California Agriculture and Natural Resources secures funding through public contributions to support its programs, according to the official website. The organization promotes sustainable practices to strengthen resilient ecosystems and economic vitality according to its official website. It utilizes nine research and extension centers as laboratories representing California’s diverse ecosystems according to the official website.
The university has gained recognition for its trusted services linking research to community needs according to its official website. As part of the University of California system, it manages Cooperative Extension services according to the official website. Each year it conducts over 33,800 educational events and engages more than 18,400 volunteers in its initiatives according to the official website.
UC Agriculture and Natural Resources extends university research statewide through educational programs operating in all 58 counties. It delivers science-based information via workshops and partnerships while mobilizing volunteers and research centers to address state issues and enhance economic contributions according to the official website.
As Californians prepare for another dry season, these insights into plant adaptation highlight ongoing efforts by UC Agriculture and Natural Resources to promote environmental stewardship across communities.