Efficient compartmentalization and translocation of toxic minerals lead tolerance in volkamer lemon tetraploids more than diploids under moderate and high salt stress

ABSTRACTConjugation experiments withBacillus thuringiensisand transfer kinetics demonstrated that salt stress has a positive impact on plasmid transfer efficiency. Compared to standard osmotic conditions (0.5% NaCl), plasmid transfer occurred more rapidly, and at higher frequencies (>100-fold), when bacteria were exposed to a high-salt stress (5% NaCl) in liquid brain heart infusion (BHI). Under milder salt conditions (2.5% NaCl), only a 10-fold effect was observed in Luria-Bertani broth and no difference was detected in BHI. These observations are particularly relevant in the scope of potential gene exchanges among members of theBacillus cereusgroup, which includes food-borne contaminants and pathogens.

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High salt stress in wheat leaves causes retardation of chlorophyll accumulation due to a limited rate of protochlorophyllide formation

Physiologia Plantarum ◽

10.1111/j.1399-3054.2007.00885.x ◽

2007 ◽

Vol 130 (1) ◽

pp. 157-166 ◽

Cited By ~ 27

Author(s):

Amal F. Abdelkader ◽

Henrik Aronsson ◽

Christer Sundqvist

Keyword(s):

Salt Stress ◽

High Salt ◽

Chlorophyll Accumulation ◽

High Salt Stress ◽

Wheat Leaves

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Salinity stress affects growth and physiology of mulberry (Morus sp.)

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/948/1/012049 ◽

2021 ◽

Vol 948 (1) ◽

pp. 012049

Author(s):

Y R E Wulandari ◽

T Triadiati ◽

Y C Sulistyaningsih ◽

A Suprayogi ◽

M Rahminiwati

Keyword(s):

Salt Stress ◽

Plant Height ◽

Block Design ◽

Proline Content ◽

Photosynthesis Rate ◽

High Salt ◽

Stem Cuttings ◽

Total Chlorophyll ◽

Shoot Number ◽

High Salt Stress

Abstract Mulberry (Morus sp.) plant is used to feed silkworms, and the leaves contain compounds with medicinal properties of secondary metabolites. However, the content of these compounds tends to increase under stress conditions, for instance, salt stress. This study, therefore, aimed to determine the accessions of mulberry with tolerance for salt stress. The stem cuttings of seven accessions from 5 regions, Bogor, Pati, Situbondo, Bali, and Gowa, were planted following a factorial randomized block design with 3 replications. Subsequently, the first factor using the accessions, and the second factor using NaCl solution (0.0%, 0.2%, 0.3%, and 0.4% concentrations) were performed. The variables observed were growth (leaves number, plant height, and shoots number), photosynthesis rate, total chlorophyll, and proline content. The results showed that the M6 accession exhibited tolerance under high salt stress, based on the leaves number, plant height, shoot number, photosynthesis rate, and proline content. Furthermore, an increase in salt concentration was discovered to cause a decrease in growth, photosynthesis rate, and total chlorophyll content. Also, proline accumulation stimulated by high salt stress possibly plays an important role in salinity tolerance.

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