Identification of Two Myrosinases from a Leclercia adecarboxylata Strain and Investigation of Its Tolerance Mechanism to Glucosinolate Hydrolysate

Optimum concentrations of heavy metals like copper, cadmium, lead, chromium, and zinc in soil are essential in carrying out various cellular activities in minimum concentrations and hence help in sustaining all life forms, although higher concentration of these metals is lethal to most of the life forms.Galerina vittiformis, a macrofungus, was found to accumulate these heavy metals into its fleshy fruiting body in the order Pb(II) > Cd(II) > Cu(II) > Zn(II) > Cr(VI) from 50 mg/kg soil. It possesses various ranges of potential cellular mechanisms that may be involved in detoxification of heavy metals and thus increases its tolerance to heavy metal stress, mainly by producing organic acids and phytochelatins (PCs). These components help in repairing stress damaged proteins and compartmentalisation of metals to vacuoles. The stress tolerance mechanism can be deduced by various analytical tools like SEM-EDX, FTIR, and LC-MS. Production of two kinds of phytochelatins was observed in the organism in response to metal stress.

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Boron Supply and Water Deficit Consequences in Young ParicÃ¡ (Schizolobium parahyba var. amazonicum) Plants

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha44110136 ◽

2016 ◽

Vol 44 (1) ◽

pp. 250-256 ◽

Cited By ~ 1

Author(s):

Bianca do Carmo SILVA ◽

PÃªola Reis de SOUZA ◽

Daihany Moraes CALLEGARI ◽

Vanessa Ferreira ALVES ◽

Allan Klynger da Silva LOBATO ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Stomatal Conductance ◽

Gas Exchange ◽

Water Use Efficiency ◽

Water Deficit ◽

Water Use ◽

Electrolyte Leakage ◽

Tolerance Mechanism ◽

Schizolobium Parahyba ◽

Use Efficiency

Boron (B) is a very important nutrient required by forest plants; when supplied in adequate amounts, plants can ameliorate the negative effects of abiotic stresses. The objective of this study was to (i) investigate gas exchange, (ii) measure oxidant and antioxidant compounds, and (iii) respond how B supply acts on tolerance mechanism to water deficit in young Schizolobium parahyba plants. The experiment employed a factorial that was entirely randomised, with two boron levels (25 and 250 Âµmol L-1, simulating conditions of sufficient B and high B, respectively) and two water conditions (control and water deficit). Water deficit induced negative modifications on net photosynthetic rate, stomatal conductance and water use efficiency, while B high promoted intensification of the effects on stomatal conductance and water use efficiency. Hydrogen peroxide and electrolyte leakage of both tissues suffered non-significant increases after B high and when applied water deficit. Ascorbate levels presented increases after water deficit and B high to leaf and root. Our results suggested that the tolerance mechanism to water deficit in young Schizolobium parahyba plants is coupled to increases in total glutathione and ascorbate aiming to control the overproduction of hydrogen peroxide and alleviates the negative consequences on electrolyte leakage and gas exchange. In relation to B supply, this study proved that sufficient level promoted better responses under control and water deficit conditions.

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An Overview of Salinity Tolerance Mechanism in Plants

Salt and Drought Stress Tolerance in Plants - Signaling and Communication in Plants ◽

10.1007/978-3-030-40277-8_1 ◽

2020 ◽

pp. 1-16 ◽

Cited By ~ 1

Author(s):

Waqas-ud-Din Khan ◽

Mohsin Tanveer ◽

Rabia Shaukat ◽

Mohsin Ali ◽

Fiza Pirdad

Keyword(s):

Salinity Tolerance ◽

Tolerance Mechanism

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