Life history plasticity and water use trade-offs associated with drought resistance in a clade of California jewelflowers
Cite this dataset
Strauss, Sharon et al. (2022). Life history plasticity and water use trade-offs associated with drought resistance in a clade of California jewelflowers [Dataset]. Dryad. https://doi.org/10.5061/dryad.4b8gtht7s
Water limitation is a primary driver of plant geographic distributions and individual plant fitness. Drought resistance is the ability to survive and reproduce despite limited water, and numerous studies have explored its physiological basis in plants. However, it is unclear how drought resistance and trade-offs associated with drought resistance evolve within plant clades. We quantified the relationship between water availability and fitness for 13 short-lived plant taxa in the Streptanthus clade that vary in their phenology and the availability of water in the environments where they occur. We derived two parameters from these relationships: plant fitness when water is not limiting, and the water inflection point (WIF), the watering level at which additional water is most efficiently turned into fitness. We used phylogenetic comparative methods to explore trade-offs related to drought resistance and trait plasticity, and the degree to which water relationship parameters are conserved.
Taxa from drier climates produced fruits at the lowest water levels, had a lower WIF, flowered earlier, had shorter lifespans, more plastic water use efficiency (WUE), and lower fitness at non-limiting water. In contrast, later-flowering Streptanthus taxa from less xeric climates experienced high fitness at non-limiting water but had no fitness at the lowest water levels. Across the clade, we found a trade-off between drought resistance and fitness at high water, though a single ruderal species was an outlier in this relationship. Our results suggest that drought escape trades off with maximal fitness under non-limiting water, and both are tied to phenology. We also found that variation in trait plasticity determines how different plant species produce fitness over a water gradient.
Uwezo wa plastiki ya historia ya maisha na matumizi ya maji ya biashara inayohusiana na upinzani wa ukame katika clade ya maua ya vito vya California Quote hii dataset Strauss, Sharon et al. (2022) (k) Ni nini kinachohusika? Historia ya maisha plasticity na maji kutumia biashara-offs kuhusishwa na ukali upinzani katika clade ya California jewelflowers [Dataset]. Dryad. "Kutumia ""Dryad4b8g7t7"" ni moja ya sababu za msingi za usambazaji wa kijiografia wa mimea na afya ya mimea." Uvumilivu wa ukame ni uwezo wa kuishi na kuzaliana licha ya maji madogo, na masomo mengi yamechunguza msingi wake wa kisaikolojia katika mimea. Hata hivyo, haijulikani wazi jinsi upinzani wa ukame na biashara zinazohusiana na upinzani wa ukame huendelea ndani ya clades za mimea. Utafiti wa utafiti wa maji na afya ya mimea 13 ya muda mfupi katika clade ya Streptanthus ulionyesha kwamba mimea hiyo ina uwezo wa kuhifadhi maji kwa muda mrefu. "Tunaweza kupata vipimo viwili kutoka kwa uhusiano huu: ""fitness ya mmea wakati maji hayana kikomo,"" na ""water inflection point"" (WIP), kiwango cha maji ambayo maji ya ziada ni ufanisi zaidi kugeuka katika fitness." Kwa kutumia mbinu za kulinganisha phylogenetic, tulichunguza biashara zinazohusiana na upinzani wa ukame na plasticity ya tabia, na kiwango ambacho vigezo vya uhusiano wa maji huhifadhiwa. Mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea. Kinyume chake, taxa za Streptanthus zinazozaa baadaye kutoka hali ya hewa ya chini ya xeric zilipata usawa wa juu kwenye maji yasiyo na kikomo lakini hazikuwa na usawa katika viwango vya chini vya maji. Katika clade nzima, tulipata biashara kati ya upinzani wa ukame na fitness katika maji ya juu, ingawa spishi moja ya ruder ilikuwa outlier katika uhusiano huu. Matokeo yetu yanaonyesha kwamba kukimbia ukame inahusiana na uwezo wa juu chini ya maji yasiyo na kikomo, na zote mbili zimeunganishwa na phenology. Pia, tofauti katika plasticity ya tabia huamua jinsi spishi tofauti za mimea zinazozalisha fitness juu ya gradient ya maji.