@article{andrade_cardoso_oliveira_pereira_haverroth_souza_damatta_zsogon_martins_2024, title={Enhanced drought resistance in tomato via reduced auxin sensitivity: delayed dehydration and improved leaf resistance to embolism}, volume={176}, ISSN={["1399-3054"]}, url={http://dx.doi.org/10.1111/ppl.14408}, DOI={10.1111/ppl.14408}, abstractNote={Abstract Auxins are master regulators of plant development and auxin perception mutants display smaller leaves, lower transpiration, and narrower xylem vessels than their corresponding wild types. Here, we evaluated whether the leaf embolism resistance and overall plant resistance to drought are altered in the auxin perception mutant diageotropica ( dgt ). Our assessments demonstrate that the dgt mutants in tomato exhibit considerably smaller xylem vessels in stems (‐24%), leaf petioles (‐43%), and leaf midribs (‐34%) than the wild type. Alongside narrower vessels, dgt mutants exhibited greater xylem cell wall thickness‐to‐conduit diameter and greater leaf embolism resistance than the wild type. The water potential at 50% cumulative leaf embolism (P 50 ) of dgt and wild type was ‐1.39 and ‐1.14 MPa, respectively. Plants of dgt also exhibited higher stomatal safety margin (water potential difference between stomatal closure and P 50 ), needed a longer time to reach their P 50 in a dry‐down experiment, and showed a faster recovery in leaf gas exchange upon rehydration than the wild type. The impaired auxin signaling resulted in lower canopy area and stomatal conductance, which likely contributed to delaying the time for plants to reach hydraulic damage during drought. These findings demonstrate a clear association between structural and physiological changes and improved resistance against drought‐induced hydraulic dysfunction in the dgt tomato mutant.}, number={3}, journal={PHYSIOLOGIA PLANTARUM}, author={Andrade, Moab T. and Cardoso, Amanda A. and Oliveira, Leonardo A. and Pereira, Talitha S. and Haverroth, Eduardo J. and Souza, Genaina A. and Damatta, Fabio M. and Zsogon, Agustin and Martins, Samuel C. V.}, year={2024}, month={May} }
 @article{haverroth_rimer_oliveira_lima_cesarino_martins_mcadam_cardoso_2024, title={Gradients in embolism resistance within stems driven by secondary growth in herbs}, ISSN={["1365-3040"]}, url={http://dx.doi.org/10.1111/pce.14921}, DOI={10.1111/pce.14921}, abstractNote={Abstract The stems of some herbaceous species can undergo basal secondary growth, leading to a continuum in the degree of woodiness along the stem. Whether the formation of secondary growth in the stem base results in differences in embolism resistance between the base and the upper portions of stems is unknown. We assessed the embolism resistance of leaves and the basal and upper portions of stems simultaneously within the same individuals of two divergent herbaceous species that undergo secondary growth in the mature stem bases. The species were Solanum lycopersicum (tomato) and Senecio minimus (fireweed). Basal stem in mature plants of both species displayed advanced secondary growth and greater resistance to embolism than the upper stem. This also resulted in significant vulnerability segmentation between the basal stem and the leaves in both species. Greater embolism resistance in the woodier stem base was found alongside decreases in the pith‐to‐xylem ratio, increases in the proportion of secondary xylem, and increases in lignin content. We show that there can be considerable variation in embolism resistance across the stem in herbs and that this variation is linked to the degree of secondary growth present. A gradient in embolism resistance across the stem in herbaceous plants could be an adaptation to ensure reproduction or basal resprouting during episodes of drought late in the lifecycle.}, journal={PLANT CELL AND ENVIRONMENT}, author={Haverroth, Eduardo J. and Rimer, Ian M. and Oliveira, Leonardo A. and Lima, Leydson G. A. and Cesarino, Igor and Martins, Samuel C. V. and Mcadam, Scott A. M. and Cardoso, Amanda A.}, year={2024}, month={Apr} }
 @article{pereira_oliveira_andrade_haverroth_cardoso_martins_2024, title={Linking water-use strategies with drought resistance across herbaceous crops}, volume={176}, ISSN={["1399-3054"]}, url={http://dx.doi.org/10.1111/ppl.14114}, DOI={10.1111/ppl.14114}, abstractNote={Abstract}, number={1}, journal={PHYSIOLOGIA PLANTARUM}, author={Pereira, Talitha S. and Oliveira, Leonardo A. and Andrade, Moab T. and Haverroth, Eduardo J. and Cardoso, Amanda A. and Martins, Samuel C. V.}, year={2024}, month={Jan} }
 @article{haverroth_da-silva_taggart_oliveira_cardoso_2024, title={Shoot hydraulic impairments induced by root waterlogging: Parallels and contrasts with drought}, volume={6}, ISSN={["1532-2548"]}, url={https://doi.org/10.1093/plphys/kiae336}, DOI={10.1093/plphys/kiae336}, abstractNote={Soil waterlogging and drought correspond to contrasting water extremes resulting in plant dehydration. Dehydration in response to waterlogging occurs due to impairments to root water transport, but no previous study has addressed whether limitations to water transport occur beyond this organ or whether dehydration alone can explain shoot impairments. Using common bean (Phaseolus vulgaris) as a model species, we report that waterlogging also impairs water transport in leaves and stems. During the very first hours of waterlogging, leaves transiently dehydrated to water potentials close to the turgor loss point, possibly driving rapid stomatal closure and partially explaining the decline in leaf hydraulic conductance. The initial decline in leaf hydraulic conductance (occurring within 24 h), however, surpassed the levels predicted to occur based solely on dehydration. Constraints to leaf water transport resulted in a hydraulic disconnection between leaves and stems, furthering leaf dehydration during waterlogging and after soil drainage. As leaves dehydrated later during waterlogging, leaf embolism initiated and extensive embolism levels amplified leaf damage. The hydraulic disconnection between leaves and stems prevented stem water potentials from declining below the threshold for critical embolism levels in response to waterlogging. This allowed plants to survive waterlogging and soil drainage. In summary, leaf and stem dehydration are central in defining plant impairments in response to waterlogging, thus creating similarities between waterlogging and drought. Yet, our findings point to the existence of additional players (likely chemicals) partially controlling the early declines in leaf hydraulic conductance and contributing to leaf damage during waterlogging.}, journal={PLANT PHYSIOLOGY}, author={Haverroth, Eduardo J. and Da-Silva, Cristiane J. and Taggart, Matthew and Oliveira, Leonardo A. and Cardoso, Amanda A.}, year={2024}, month={Jun} }
 @article{haverroth_gobble_bradley_harris-gilliam_fischer_williams_long_sozzani_2024, title={The Black American experience: Answering the global challenge of broadening participation in STEM/agriculture}, volume={1}, ISSN={["1532-298X"]}, url={https://doi.org/10.1093/plcell/koae002}, DOI={10.1093/plcell/koae002}, journal={PLANT CELL}, author={Haverroth, Eduardo and Gobble, Mariah and Bradley, Latosha and Harris-Gilliam, Kailyn and Fischer, Alicia and Williams, Cranos and Long, Terri and Sozzani, Rosangela}, year={2024}, month={Jan} }
 @article{haverroth_oliveira_andrade_taggart_mcadam_zsogon_thompson_martins_cardoso_2023, title={Abscisic acid acts essentially on stomata, not on the xylem, to improve drought resistance in tomato}, volume={8}, ISSN={["1365-3040"]}, url={http://dx.doi.org/10.1111/pce.14676}, DOI={10.1111/pce.14676}, abstractNote={Abstract}, journal={PLANT CELL AND ENVIRONMENT}, publisher={Wiley}, author={Haverroth, Eduardo J. and Oliveira, Leonardo A. and Andrade, Moab T. and Taggart, Matthew and McAdam, Scott A. M. and Zsogon, Agustin and Thompson, Andrew J. and Martins, Samuel C. V. and Cardoso, Amanda A.}, year={2023}, month={Aug} }