The stress protein level under clinorotation in context of the seedling developmental program and the stress response

Kozeko, Liudmyla; Kordyum, Е.L.

doi:10.1007/bf02870422

Cited by 23 publications

(14 citation statements)

References 14 publications

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“…If it also takes place in seed tissues, the period of its activity should coincide with seed germi nation and the beginning of seedling growth. Hydrol ysis of Hsps stored in the mature seed, as well as reac tivation of constitutive Hsp synthesis in this period (Queitsch et al, 2000;Sung et al, 2001;Kozeko and Kordyum, 2006), suggest that the GA effect is medi ated. Moreover, it is also possible that the antibiotic in cells is more protected from light destruction and is active longer.…”

Section: Resultsmentioning

confidence: 98%

Changes in heat-shock protein synthesis and thermotolerance of Arabodopsis thaliana seedlings resulting from Hsp90 inhibition by geldanamycin

Kozeko

2014

Cell Tiss. Biol.

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The influence of geldanamycin (GA), a specific inhibitor of heat shock protein Hsp90, on the synthesis of Hsp70 and Hsp90 and thermotolerance of Arabidopsis thaliana seedlings has been studied. Incu bation of seedlings with GA under normal conditions induced synthesis of these stress proteins. Treatment of seeds with the Hsp90 inhibitor resulted in elevated constitutive levels of Hsp70 and Hsp90 in seedlings, as well as increased induction of their synthesis under heat shock. The GA effect increased with its concentration. Hsp up regulation promoted thermotolerance of seedlings. The findings suggest autoregulation of heat shock protein synthesis and regulation of plant tolerance by Hsp90.

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Section: Resultsmentioning

confidence: 98%

Changes in heat-shock protein synthesis and thermotolerance of Arabodopsis thaliana seedlings resulting from Hsp90 inhibition by geldanamycin

Kozeko

2014

Cell Tiss. Biol.

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“…Similarly, increasing the duration of gravistimulation will estimate the amount of time required to saturate the gravitropic signal. The direction of clinorotation, e.g., rotation around the longitudinal axis or an axis perpendicular to the root growth direction has been shown to affect the stress level 32 and therefore can be used to distinguish stimulation of receptors in lateral columella cell regions from domain characteristic for apical and basal wall regions.…”

Section: Resultsmentioning

confidence: 99%

Effects of mechanostimulation on gravitropism and signal persistence in flax roots

John

Hasenstein²

2011

Plant Signaling & Behavior

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“…The amount of amyloplasts in parenchyma cell sections was higher in minitubers formed under slow clinorotation (2 rpm) (Nedukha and Vasyltov 2001). An increase in the proton permeability and a decrease in the polar lipid content in pea chloroplasts were observed under slow clinorotation (2 rpm) (Mikhaylenko et al 2001) as well as an increase in HSP70 and HSP90 levels (Kozeko and Kordyum 2006). Clinostat rotation (3 rpm) did not affect development of leaves as well as germination but inhibited influorecsence growth in Arabidopsis (Ishii et al 1996).…”

Section: Introductionmentioning

confidence: 87%

“…For example, accumulation of Heat Shock Proteins (HSPs) is crucial in protecting from thermal killing during heat stress (Vierling 1991). Kozeko and Kordyum have observed changes in the levels of HSPs under hypergravity (Kozeko and Kordyum 2009) and clinorotation (Kozeko and Kordyum 2006) in pea. Thus plants may adapt to the microgravity environment (real or simulated), which is also a stress, by synthesising required proteins.…”

Section: Effects Of Microgravity On Chlorophyll Contentmentioning

confidence: 99%

Effects of Clinorotation on Growth and Chlorophyll Content of Rice Seeds

Jagtap

Awhad

Santosh

et al. 2010

Microgravity Sci. Technol.

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Microgravity, as a different environment, has been shown to affect plant growth and development (Sievers et al. 1996;Sack 1997). In the present study, effects of slow clinorotation (2 rpm) on growth and chlorophyll content in rice (variety: PRH-10) seedlings were investigated. Rice seeds were clinorotated continuously for 3, 5 and 7 days under ambient conditions. Root and shoot lengths and weights of rice seedlings were measured on the third, fifth and seventh day. Chlorophyll was extracted using N, N-Dimethylformamide (DMF). Absorption and fluorescence spectra of chlorophyll were recorded. Chlorophyll a, chlorophyll b and total chlorophyll contents were calculated from absorption spectra using Arnon's method. Results showed an increase in root and shoot lengths in clinorotated samples. Similar results were obtained for root and shoot weights. Absorption spectra of chlorophyll showed no shift in the absorption peaks. Chlorophyll content was increased in clinorotated samples as compared to the controls. Interestingly, the difference between chlorophyll content in control and clinorotated samples decreased as the number of days of clinorotation increased. Chlorophyll a/b ratio was lowered in clinorotated samples as compared to the controls. These results suggest that slow clinorotation (2 rpm) affects plant growth and chlorophyll content in rice seedlings.

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The stress protein level under clinorotation in context of the seedling developmental program and the stress response

Cited by 23 publications

References 14 publications

Changes in heat-shock protein synthesis and thermotolerance of Arabodopsis thaliana seedlings resulting from Hsp90 inhibition by geldanamycin

Changes in heat-shock protein synthesis and thermotolerance of Arabodopsis thaliana seedlings resulting from Hsp90 inhibition by geldanamycin

Effects of mechanostimulation on gravitropism and signal persistence in flax roots

Effects of Clinorotation on Growth and Chlorophyll Content of Rice Seeds

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