The Effect of Water Stress on the Growth Rate, Water Content and Proline Accumulation in Tomato Calli and Seedlings

Shtereva, Lydia; Atanassova, B.; Karcheva, T.; Petkov, V.

doi:10.17660/actahortic.2008.789.26

Cited by 10 publications

(11 citation statements)

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“…According to Shtereva et al, (2008), PEG induced drought stress increases endogenous proline concentration in tomato. According to Anjum et al, (2000), proline is a scavenger of OH * radical and plays an important role in osmotic adjustment during oxidative stress.…”

Section: Impact Of Ppfm and Pgrs On Prolinementioning

confidence: 99%

Impact of Pink Pigmented Facultative Methylotroph and PGRs on Water Status, Photosynthesis, Proline and NR Activity in Tomato under Drought

Sivakumar¹,

Nandhitha²,

Chandrasekaran³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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Section: Impact Of Ppfm and Pgrs On Prolinementioning

confidence: 99%

Impact of Pink Pigmented Facultative Methylotroph and PGRs on Water Status, Photosynthesis, Proline and NR Activity in Tomato under Drought

Sivakumar¹,

Nandhitha²,

Chandrasekaran³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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Section: Introductionmentioning

confidence: 99%

“…The relative LWC decrease by 5 % doubled the increase of proline content. SHTEREVA et al (2008) mention the possibility to use a 'proline' test as an instrument for fi nding tomato genotypes tolerant to water stress.Apart from the natural mechanisms reducing the stress, new possible uses of complementary substances leading to greater stress endurance of plants are being searched for. One such substance is aminolevulinic acid (ALA) which has a number of positive eff ects on plant physiology.…”

mentioning

confidence: 99%

Effect of water stress on selected physiological characteristics of tomatoes

Pokluda¹,

Petříková²,

Abdelaziz³

et al. 2014

Acta Univ. Agric. Silvic. Mendelianae Brun.

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POKLUDA, R., PETŘÍKOVÁ, K., ABDELAZIZ, M. E., JEZDINSKÝ, A.: Eff ect of water stress on selected physiological characteristics of tomatoes. Acta univ. agric. et silvic. Mendel. Brun., 2010, LVIII, No. 1, pp. 131-138 This work presents the results of a fi eld experiment with tomato cv. Proton grown under water stress conditions and under well irrigated conditions. At the same time, the eff ects of Pentakeep supporting agent (consisting of aminolevulinic acid) was studied. The following characteristics of plant phy siolo gy were studied -specifi c leaf area (SLA), leaf water content (LWC) and leaf proline concentration. . The highly signifi cant eff ect of water conditions resulted in the increase of proline content under water stress treatment. Although Pentakeep increased the proline content by 9 %, its eff ect was not of signifi cant importance. The proline content was also infl uenced by the date of sampling. The results indicate that physiological characteristics, such as SLA, LWC and proline content, are good indicators of water stress in tomato, proline content being a particularly reliable parameter corresponding to the actual water stress of plants.water stress, tomato, specifi c leaf area, leaf water content, proline Droughts in connection with high temperatures have become the most common abiotic factors infl uencing physiological processes in plants, and consequently the yield and its quality. Under water stress, plants naturally try to prevent loss of water by means of various mechanisms, such as pore closing (CHAVES et al., 2003), synthesis of osmoprotectants -sugars, aminoacid proline and other substances (RAMANJULU et al., 2002). It has been found out (CLAUSSEN, 2005) that proline content grows signifi cantly as early as in 14 hours a er water stress. When assessing stress in hydroponically grown tomatoes, it was found out that proline content in tomato leaves under water stress was higher in summer than at the end of the vegetation. The level of proline also depends on light intensity. A negative correlation of proline and leaf water content (LWC) was proved. The relative LWC decrease by 5 % doubled the increase of proline content. SHTEREVA et al. (2008) mention the possibility to use a 'proline' test as an instrument for fi nding tomato genotypes tolerant to water stress.Apart from the natural mechanisms reducing the stress, new possible uses of complementary substances leading to greater stress endurance of plants are being searched for. One such substance is aminolevulinic acid (ALA) which has a number of positive eff ects on plant physiology.According to KORMAZ et al. (2009), spraying or dipping pepper seedlings in ALA solution clearly reduced the signs of cold damage. At the same time, an exogenous application of ALA increased the content of the monitored constituents, including proline. ALA also increased the relative leaf water con-

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“…Other key events also occur during this period, such as enzyme action [18], reserve protein mobilisation [19] and hormone participation [20]. It is, therefore, justifiable to use the radicle analytically because its early protrusion is associated with energy availability [21], and it grows more than the hypocotyl under conditions of stress [22]. Another important consideration is that abnormal seedlings germinate later [23].…”

Section: Introductionmentioning

confidence: 99%

Association between biometric characteristics of tomato seeds and seedling growth and development

Peñaloza

Durán

2015

Electronic Journal of Biotechnology

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Background: The size and weight of tomato seeds depend on genetics and can be modified by environment and management. In some species, a strong relation has been described between physical aspects of the seeds and the quality of the corresponding seedlings, but this cannot be considered a general rule. The objective of this research was to identify any association between the biometric characteristics of tomato seeds and the growth and development of their seedlings. Results: A total of 18 lots of hybrid tomato seeds were used (from indeterminate plants with round fruits), belonging to six varieties from two reproduction seasons. Each lot was evaluated for seed size and weight, and seed quality, in terms of the germination test (5 and 14 d after sowing). The number of normal roots emerged with a length above 2 mm was also evaluated at d 3, 4 and 5 after sowing. The length of the seedlings and their total and partial dry weight were measured 5 d after sowing. The results indicate that there was no association between seed size and weight and subsequent seedling emergence, and only weak correlations were found between the dry weight of the radicle and cotyledon and seed size. Conclusion: There is little association between the physical characteristics of the seeds and the subsequent seedlings, making it impossible to propose the use of seed weight or size as a compliment to quality evaluation tests.

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The Effect of Water Stress on the Growth Rate, Water Content and Proline Accumulation in Tomato Calli and Seedlings

Cited by 10 publications

References 0 publications

Impact of Pink Pigmented Facultative Methylotroph and PGRs on Water Status, Photosynthesis, Proline and NR Activity in Tomato under Drought

Impact of Pink Pigmented Facultative Methylotroph and PGRs on Water Status, Photosynthesis, Proline and NR Activity in Tomato under Drought

Effect of water stress on selected physiological characteristics of tomatoes

Association between biometric characteristics of tomato seeds and seedling growth and development

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