Wyniki wyszukiwania - Biblioteka Nauki

1

Potato yield and tuber quality under drought conditions

100%

Boguszewska D. , Nowacki W.

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nr 1 Suppl.

2

Identification of Triticum durum genotypes showing increased tolerance to oxidative stress

100%

Lesniowska-Nowak J. , Sozoniuk M. , Kawecka M. , Maga K. , Mrozek M.

Agronomy Science

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2020

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tom 75

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nr 1

3

Stress-induced delta1-pyrroline-5-carboxylate synthetase (P5CS) gene confers tolerance to salt stress in transgenic sugarcane

100%

Guerzoni J. T. S. , Belintani N. G. , Moreira R. M. P. , Hoshino A. A. , Domingues D. S. , Filho J. C. B. , Vieira L. G. E.

Acta Physiologiae Plantarum

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2014

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tom 36

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nr 09

EN

High salinity interferes in sugarcane growth and development, affecting not only crop yield but also reducing sucrose concentration in culms. Sugarcane plants submitted to salt stress can accumulate compatible solutes, such as proline, which may counteract the effects of salt accumulation in the vacuole and scavenge reactive oxygen species. The objective of this study was to evaluate the response to salt stress of sugarcane plants transformed with the Vigna aconitifolia P5CS gene, which encodes Δ1- pyrroline-5-carboxylate synthetase, under the control of a stress-induced promoter AIPC (ABA-inducible promoter complex). For this, 4-month-old clonally multiplied sugarcane plants from two transformation events were irrigated every 2 days with 1/10 Hoagland’s solution supplemented with 100, 150 and 200 NaCl, progressively, during 28 days. Transgenic lines showed increased transgene expression in 3.75-fold when compared with the control plants after 9 days of irrigation with saline water, which can explain the higher proline concentration found in these plants. At the end of the experiment (day 28), the transgenic lines accumulated up to 25 % higher amounts of proline when compared with non-transformed control plants. Stress response in transgenic plants was also accompanied by a reduction of malondialdehyde (MDA) derived from cellular lipid peroxidation in leaves, lower Na⁺ accumulation in leaves and maintenance of photochemical efficiency of PSII. Thus, proline contributed to the protection of the photosynthetic apparatus and the prevention of oxidative damage in transgenic sugarcane under salt stress.

4

Effect of Arsenic on Germination of Isatis cappadocica Desv., a Newly Discovered Arsenic Hyperaccumulator

100%

Karimi N. , Shayesteh L. S. , Ghasempour H.

Acta Biologica Cracoviensia. Series Botanica

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2013

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tom 55

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nr 2

5

Improved zinc tolerance of tobacco by transgenic expression of an allene oxide synthase gene from hexaploid wheat

100%

Liu H.-H. , Wang Y.-G. , Wang S.-P. , Li H.-J. , Xin Q.-G.

Acta Physiologiae Plantarum

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2014

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tom 36

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nr 09

EN

Allene oxide synthase (AOS, EC 4.2.1.92) is the first specific jasmonate biosynthetic pathway gene. In this study, a full-length cDNA of AOS gene was cloned from common wheat nannong 9918. The gene contains an open reading frame (1,446 bp) encoding 418 amino acids. Comparative and bioinformatic analysis revealed that the deduced protein of TaAOS was highly homologous to AOSs from other plant species. The transcript of TaAOS was found to be abundantly expressed in the flag leaves, and was up-regulated by the inoculation of B. Graminis (DC.) E.O. Speer f. sp. Tritici (Bgt) in wheat leaves. In addition, it was also induced by high concentration of NaCl and ZnCl₂. When TaAOS was overexpressed in tobacco leaves via Agrobacterium tumefaciens infection, the transgenic tobacco plants displayed stronger tolerance to ZnCl₂ stress compared to transgenic GFP plants. Taken together, the above facts demonstrated that TaAOS may play a role in response to diverse stresses in plants.

6

Hardening pretreatment by drought and low temperature enhanced chilling stress tolerance of cucumber seedlings

84%

Ghanbari F. , Kordi S.

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2019

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tom 18

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nr 2

EN

Chilling stress is of major limiting factors influencing the growth and development of warm-season crops like cucumber. In this research, the possibility of chilling tolerance of cucumber seedlings was investigated through employing the drought and low-temperature pretreatments. The factorial experiment consisted of two factors including cucumber cultivars (i.e. ‘Super Dominos’ and ‘Super Star’) and hardening treatments (control, low temperatures at 10°C, and 15°C and drought simulated by 10% and 20% PEG) based on completely randomized design (CRD) in 3 replications. After applying treatments and providing them 48 h opportunity to be recovered, the seedlings were subjected to 3°C for a six-day period and 6 h for each day. All hardening treatments improved seedlings’ growth, chlorophyll content, total phenol (TP) and antioxidant enzyme activities, while reducing chilling injury index and malondialdehyde (MDA) content. Comparing to temperature hardening, the drought pretreatment showed to have a better effect on inducing the chilling tolerance into cultivars. Overall, the results of this experiment showed that employing drought and low-temperature pretreatments enabled cucumber seedlings to mitigate the harmful effects of chilling.

7

Mi-tomato responses to two-spotted spider mite attack

84%

Godzina-Sawczuk M. , Karolczyk S. , Kielkiewicz M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 2

8

Arabidopsis thaliana tolerates iron deficiency more than Thellungiella salsuginea by inducing metabolic changes at the root level

84%

Msilini N. , Ferhi J. , Chebbi M. , Lachaal M. , Ouerghi Z.

Acta Biologica Cracoviensia. Series Botanica

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2015

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tom 57

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nr 1

EN

Several studies have used A. thaliana as a model to identify the physiological and molecular mechanisms underlying iron deficiency tolerance in plants. Here, Arabidopsis thaliana and Thellungiella salsuginea were used to investigate the differential responses to iron deficiency of these two species. Plants were cultivated in hydroponic medium containing 5 or 0 μM Fe, for 10 days. Results showed that rosette biomass was more reduced in T. salsuginea than in A. thaliana when grown on Fe-deficient medium. As a marker for iron deficiency tolerance, the induction of ferric chelate reductase (FCR) and phosphoenolpyruvate carboxylase (PEPC) activities was observed only in A. thaliana roots. In addition, we found that the accumulation of phenolic acids in roots of N1438 ecotype of A. thaliana was stimulated by Fe deficiency. Furthermore, an increase of flavonoids content in the root and exudates was observed under Fe-deficiency in this ecotype. Unlike other abiotic stresses, it appears that iron deficiency effects were more pronounced in Thellungiella than in Arabidopsis. The higher tolerance of the Arabidopsis plant to iron deficiency may be due to the metabolic changes occurring in the roots.

9

Preliminary assessment of antitranspirant Vapor Gard influence on Actinidia arguta growing under drought stress conditions

84%

Latocha P. , Ciechocinska M. , Pietkiewicz S. , Kalaji M.

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tom 30

10

Evaluation of some bean lines tolerance to alkaline soil

84%

Radi A. A. , Abdel-Wahab D. A. , Hamada A. M.

Journal of Biology and Earth Sciences

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2012

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tom 02

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nr 1

11

Effects of salinity stress on growth and phenolics of rice (Oryza sativa L.)

84%

Minh L. T. , Khang D. T. , Ha P. T. T. , Tuyen P. T. , Minh T. N. , Quan N. V. , Xuan T. D.

International Letters of Natural Sciences

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2016

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tom 57

EN

This study was conducted to determine the correlation between of salinity stress on growth and phenolic compounds in rice. It was observed that salinity stress caused a significant decrease in shoot lengths, fresh and dry weights of all rice varieties. Under salinity stress, changes of chemical contents also differed among phenolic compounds and rice cultivars. Total phenolics and flavonoids, and contents of vanillin and protocatechuic acid in tolerant varieties were strongly increased, whereas in contrast, they were markedly reduced in the susceptible cultivar. Ferulic acid and p-coumaric acid were detected only in tolerance rice. Vanillin and protocatechuic acid may play a role, but ferulic acid and p-coumaric acid may be much involved in the tolerant mechanism against salinity stress. Ferulic acid and p-coumaric acid and their derivatives are potent to be exploited as promising agents to reduce detrimental effects of salinity stress on rice production.

12

Antioxidant system activity increase by synthetic compounds in corn seedlings under the salt stress conditions

84%

Kurylenko L. M. , Palladina T. O.

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nr 1 Suppl.

13

Submergence tolerance in rice: involvement of ethylene, roots, carbohydrates and free radicals

84%

Jackson M. B. , Bhekasut P. , Harren , Singh H.

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nr 1 Suppl.

14

Salt tolerance by plants recommended for cultivation in saline sites of urban areas

84%

Wrochna M. , Borkowska B. , Gawronska H.

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nr 1 Suppl.

15

Hormonal priming: A terrific approach to improve salt stress tolerance in wheat

84%

Afzal I. , Basra S. M. A. , Cheema M. A. , Javed M. T.

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tom 545

EN

A pot study was conducted in net house to determine the influence of hormonal priming kinetin (50 mg·dm-3), salicylic acid (50 mg·dm-3), spermine (50 mg·dm-3) and spermidine (50 mg·dm-3) on emergence, yield, antioxidants and ionic content of two wheat (Triticum aestivum L.) cultivars SARC-1 (salt tolerant) and MH-97 (salt sensitive) under normal and saline conditions. The growth of wheat plants was severely affected by salinity stress. But the most of hormonal priming strategies were effective in alleviating the adverse effects of salt stress on wheat plants, however, hormonal priming with salicylic acid (SA) followed by priming with kinetin successfully enhanced seedling vigor by increasing emergence index, decreasing the uptake of Na+ and finally increasing grain yield of both cultivars under normal as well as saline conditions. Activities of SOD and CAT in both cultivars were significantly affected by priming in stressful environment. On the other hand, SARC-1 performed better as compared to MH-97 due to the increased antioxidant activities under salt stress. It can be concluded that priming with 50 mg·dm-3 SA followed by 50 mg·dm-3 kinetin for 12 h maximally improved salt tolerance in both wheat cultivars.

PL

Doświadczenie wazonowe zostało przeprowadzone w tunelu ogrodniczym w celu zbadania wpływu hormonalnego kondycjonowania (50 mg·dm-3 kinetyny, 50 50 mg·dm-3 kwasu salicylowego, 50 mg·dm-3 sperminy i 50 mg·dm-3 spermidyny) na rozwój, plon, zawartość jonów oraz antyoksydantów u dwóch odmian pszenicy (Triticum aestivum L.) - SARC-1 (odporna na zasolenie) i MH-97 (wrażliwa na zasolenie). Wzrost pszenicy został bardzo ograniczony przez stres solny. Jednak większość strategii hormonalnego kondycjonowania była skuteczna w łagodzenia szkodliwego wpływu zasolenia na pszenicę. Kondycjonowanie kwasem salicylowym (SA) a następnie kinetyną zwiększyło żywotność siewek poprzez zwiększenie wskaźnika wschodów, obniżenie pobierania Na+ i ostatecznie zwiększając plon obu odmian, zarówno w warunkach kontrolnych, jak i w warunkach zasolenia. Obserwowano znaczący wpływ kondycjonowania na aktywności SOD i CAT dla obu odmian w warunkach stresu. Z drugiej strony, SARC-1 wykazywał lepsze wyniki w porównaniu do MH-97 z powodu większej aktywności antyoksydantów w warunkach stresu solnego. Można wyciągnąć wniosek, iż kondycjonowanie za pomocą kwasu salicylowego o stężeniu 50 mg·dm-3, a następnie kinetyną o stężeniu 50 mg·dm-3 przez 12 godz. maksymalnie poprawia tolerancję na stres solny w przypadku obu badanych odmian pszenicy.

16

Determination of the tolerance of sunflower to lead-induced stress

84%

Winska-Krysiak M. , Koropacka K. , Gawronski S.

Journal of Elementology

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2015

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tom 20

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nr 2

EN

Six-week old sunflower seedlings, cv. Ogrodowy, were treated with 0, 15, 45 and 60 mg Pb dm-3, and then the content of lead and selected physiological and biochemical parameters were measured. Photosynthesis efficiency, water relations (intensity of transpiration, relative water content (RWC)) and gene-encoding metallothionein were measured three times after 24, 48 and 72 hours of exposure to Pb. The content of glutathione and lead was analysed after 72 hours’ exposure to Pb. Most of the lead uptake was accumulated in the roots, then in the stems and leaves, but when re-calculated per plant dry weight, the uptake of the metal did not depend on the lead dose applied. The highest 60 mg Pb dm-3 treatment was accompanied by a significant decrease in dry weight content. Moreover, most of the lead taken up in these plants was transported to the stems and leaves (23.6% of total lead uptake). The lead doses used in this study did not affect the intensity of photosynthesis, but a decrease in transpiration and relative water content was observed. The glutathione level in the plants varied depending on the organ examined and the Pb concentration in the treatment. The expression of the metallothionein gene HaMT1 was observed in the stems only. These results indicate that the sunflower cultivar Ogrodowy is a promising plant for phytoremediation of lead-polluted soils.

17

Expression of cyclophilin protein in the drought susceptible and tolerant cultivars of sorghum during water stress

84%

Sharma A. D. , Singh P.

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nr 1 Suppl.

18

Impact of elevated ultraviolet-B irradiation on cress leaves under controlled environmental conditions

84%

Svegzdiene D. , Rakleviciene D. , Koryznienc D.

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nr 1 Suppl.

19

Evaluation of food preferences and tolerance of slugs Deroceras reticulatum, Arion lusitanicus and Arion rufus [I group of plants] with references to various herbs

84%

Kozlowski J. , Kozlowska M.

Journal of Plant Protection Research

|

2003

|

tom 43

|

nr 4

381-392

20

Responses of field grown maize plants to phosphate solubilizing microorganisms under varying intensities of water deficit stress

67%

Ehteshami S. M. R. , Aghaalikhani M. , Khavazi K.

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nr 1 Suppl.