Tissue succulence in plants: Carrying water for climate change

Pérez-López, Arely V.; Lim, Sung Don; Cushman, John C.

doi:10.1016/j.jplph.2023.154081

Cited by 4 publications

(2 citation statements)

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“…Halophytism in succulents is the process of either diluting or sequestering salts at non-lethal concentrations in plant tissues [ 35 ]. The salts that accumulate are thought to be responsible for cell turgor, thereby promoting plant growth [ 36 , 37 ]. Xerophytism, on the other hand, is the plant’s ability to remain temporarily independent of the external water supply and is a common adaptation to drought [ 35 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

“…Succulent organs can store large amounts of water, allowing them to maintain a high water potential and continue photosynthesis, even during extended periods of drought [ 40 , 41 ]. Thus, research showed that xerophytes, such as halophytes, counter drought stress through the succulence of their organs [ 36 , 39 ]. In addition, drought and soil salinity often occur together, both having a significant impact on the growth and productivity of plants [ 42 , 43 ], and halophytes are widely found in landscapes affected by soil salinity and water deficit [ 44 ].…”

Section: Introductionmentioning

confidence: 99%

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Exogenous Sodium and Calcium Alleviate Drought Stress by Promoting the Succulence of Suaeda salsa

Zhang,

Tian,

Mai

2024

Plants

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Succulence is a key trait involved in the response of Suaeda salsa to salt stress. However, few studies have investigated the effects of the interaction between salt and drought stress on S. salsa growth and succulence. In this study, the morphology and physiology of S. salsa were examined under different salt ions (Na+, Ca2+, Mg2+, Cl−, and SO42−) and simulated drought conditions using different polyethylene glycol concentrations (PEG; 0%, 5%, 10%, and 15%). The results demonstrate that Na+ and Ca2+ significantly increased leaf succulence by increasing leaf water content and enlarging epidermal cell size compared to Mg2+, Cl−, and SO42−. Under drought (PEG) stress, with an increase in drought stress, the biomass, degree of leaf succulence, and water content of S. salsa decreased significantly in the non-salt treatment. However, with salt treatment, the results indicated that Na+ and Ca2+ could reduce water stress due to drought by stimulating the succulence of S. salsa. In addition, Na+ and Ca2+ promoted the activity of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD), which could reduce oxidative stress. In conclusion, Na+ and Ca2+ are the main factors promoting succulence and can effectively alleviate drought stress in S. salsa.

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