Influence of vesicular trichomes of Atriplex nummularia on photosynthesis, osmotic adjustment, cell wall elasticity and enzymatic activity

Paulino, Martha Katharinne Silva Souza; Souza, Eliane Helena Alvim de; Lins, Cíntia Maria Teixeira; Dourado, Pablo Rugero Magalhães; Leal, Lucas Yago de Carvalho; Monteiro, Danilo Rodrigues; Rego, Francisco Ernesto de Andrade; Silva, Cláudia Ulisses De Carvalho

doi:10.1016/j.plaphy.2020.07.036

Cited by 12 publications

(7 citation statements)

References 54 publications

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“…Such maintenance is also a result of reduction in water potential which ensures a favorable gradient of water absorption. Similar reports were reported on the influence of vesicular trichomes of Atriplex nummularia on osmotic adjustment and drought tolerance ( Paulino et al., 2020 ).…”

Section: Discussionsupporting

confidence: 87%

Screening for drought tolerance potential of nine cocoa (Theobroma cacao L.) genotypes from Ghana

Dzandu

Enu-Kwesi

Markwei

et al. 2021

Heliyon

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Section: Discussionsupporting

confidence: 87%

Screening for drought tolerance potential of nine cocoa (Theobroma cacao L.) genotypes from Ghana

Dzandu

Enu-Kwesi

Markwei

et al. 2021

Heliyon

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“…Similarly, Nedjimi et al [71] and Paulino et al [92] observed an EL increase in A. halimus and A. nummularia under 100 and 300 mM NaCl, respectively.…”

Section: Discussionmentioning

confidence: 72%

The C4 Atriplex halimus vs. the C3 Atriplex hortensis: Similarities and Differences in the Salinity Stress Response

et al. 2021

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Soil properties and the ability to sustain agricultural production are seriously impaired by salinity. The cultivation of halophytes is seen as a solution to cope with the problem. In this framework, a greenhouse pot experiment was set up to assess salinity response in the perennial C4 species Atriplex halimus, and in the following three cultivars of the annual C3 Atriplex hortensis: green, red, and scarlet. The four genotypes were grown for 35 days with water salinity (WS) ranging from 0 to 360 mM NaCl. Plant height and fresh weight (FW) increased at 360 vs. 0 WS. The stomatal conductance (GS) and transpiration rate (E) were more severely affected by salinity in the C4 A. halimus than in the C3 species A. hortensis. This was reflected in a lower leaf water potential indicating stronger osmotic adjustment, and a higher relative water content associated with more turgid leaves, in A. halimus than A. hortensis. In a PCA including all the studied traits, the GS and E negatively correlated to the FW, which, in turn, positively correlated with Na concentration and intrinsic water use efficiency (iWUE), indicating that reduced gas exchange associated with Na accumulation contributed to sustain iWUE under salinity. Finally, FTIR spectroscopy showed a reduced amount of pectin, lignin, and cellulose under salinity, indicating a weakened cell wall structure. Overall, both species were remarkably adapted to salinity: From an agronomic perspective, the opposite strategies of longer vs. faster soil coverage, involved by the perennial A. halimus vs. the annual A. hortensis cv. scarlet, are viable natural remedies for revegetating marginal saline soils and increasing soil organic carbon.

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“…Another trait characterizing A. halimus and C. album, and shared also by A. vulgaris, was RWC steadiness under salinity (Figure 1). Similarly, Paulino et al [72] and De Araújo et al [73] observed, no RWC decrease up to 600 mM NaCl in Atriplex nummularia despite decreased transpiration rates. Ivanova et al [69], as well, remarked the ability of C. album to maintain unaltered water status up to 350 mM NaCl water salinity, while Lu et al [74] observed a reduction in its water content already at 300 mM NaCl.…”

Section: Discussionmentioning

confidence: 73%

Physiological Adaptation to Water Salinity in Six Wild Halophytes Suitable for Mediterranean Agriculture

Calone

Bregaglio

Sanoubar

et al. 2021

Plants

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Owing to the high interspecific biodiversity, halophytes have been regarded as a tool for understanding salt tolerance mechanisms in plants in view of their adaptation to climate change. The present study addressed the physiological response to salinity of six halophyte species common in the Mediterranean area: Artemisia absinthium, Artemisia vulgaris, Atriplex halimus, Chenopodium album, Salsola komarovii, and Sanguisorba minor. A 161-day pot experiment was conducted, watering the plants with solutions at increasing NaCl concentration (control, 100, 200, 300 and 600 mM). Fresh weight (FW), leaf stomatal conductance (GS), relative water content (RWC) and water potential (WP) were measured. A principal component analysis (PCA) was used to describe the relationships involving the variables that accounted for data variance. A. halimus was shown to be the species most resilient to salinity, being able to maintain FW up to 300 mM, and RWC and WP up to 600 mM; it was followed by C. album. Compared to them, A. vulgaris and S. komarovii showed intermediate performances, achieving the highest FW (A. vulgaris) and GS (S. komarovii) under salinity. Lastly, S. minor and A. absinthium exhibited the most severe effects with a steep drop in GS and RWC. Lower WP values appeared to be associated with best halophyte performances under the highest salinity levels, i.e., 300 and 600 mM NaCl.

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Influence of vesicular trichomes of Atriplex nummularia on photosynthesis, osmotic adjustment, cell wall elasticity and enzymatic activity

Cited by 12 publications

References 54 publications

Screening for drought tolerance potential of nine cocoa (Theobroma cacao L.) genotypes from Ghana

Screening for drought tolerance potential of nine cocoa (Theobroma cacao L.) genotypes from Ghana

The C4 Atriplex halimus vs. the C3 Atriplex hortensis: Similarities and Differences in the Salinity Stress Response

Physiological Adaptation to Water Salinity in Six Wild Halophytes Suitable for Mediterranean Agriculture

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