Induction of acid phosphatase activity during germination of maize (Zea mays) seeds

Senna, Raquel; Simonin, V.; Silva-Neto, Mário A.C.; Fialho, Eliane

doi:10.1016/j.plaphy.2006.03.008

Cited by 25 publications

(26 citation statements)

References 39 publications

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“…Enzyme preparation The preparation of the crude enzyme was basically as described by Senna et al (2006). Fresh samples of ungerminated and germinated seeds were homogenized in 0.1 M sodium acetate buffer (pH 5.0).…”

Section: Methodsmentioning

confidence: 99%

“…High native phytase activities are present in cereals and cereal by-products (Steiner et al 2007). It appears that phytase activity usually increases on germination (Sung et al 2005) and germination has been used to induce phytase activity in cereals (Senna et al 2006). The current study was conducted to assess the effect of germination on phytase activities and the contents of phytate and total phosphorus in samples of different Nigerian grown cereal grains.…”

Section: Introductionmentioning

confidence: 99%

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Effect of germination on the phytase activity, phytate and total phosphorus contents of rice (Oryza sativa), maize (Zea mays), millet (Panicum miliaceum), sorghum (Sorghum bicolor) and wheat (Triticum aestivum)

et al. 2010

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The effect of germination on the level of phytase activity and the contents of phytates and phosphorus of five Nigeria grown cereal grains was studied. The cereals screened were rice (Oryza sativa), maize (Zea mays), millet (Panicum miliaceum), sorghum (Sorghum bicolor) and wheat (Triticum aestivum). Phytase activity was high (0.21-0.67 U g -1 ) in all samples. Phytate content ranged between 5.6 and 6.2 mg g -1 while total phosphorus content ranged between 3.3 and 4.3 mg g -1 . During germination, the level of phytase activity increased and reached its maximal value after seven (16-fold), six (5-fold), five (7-fold), seven (3-fold) and eight (6-fold) days of germination for rice, maize, millet, sorghum and wheat respectively. After this initial increase, phytase activity declined slightly (P<0.05). The increase in phytase activity during germination was accompanied by a significant reduction in phytate (P<0.05) and a small but significant increase in total phosphorus.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of germination on the phytase activity, phytate and total phosphorus contents of rice (Oryza sativa), maize (Zea mays), millet (Panicum miliaceum), sorghum (Sorghum bicolor) and wheat (Triticum aestivum)

et al. 2010

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“…Thus, phosphate mobilization during seed growth is prominently affected by irradiation, as the acid phosphatase activity is reduced at 1 -10 Gy doses (Table 1). Increased acid phosphatase activity during germination in maize and soybean has been reported [2] [3]. At later stages of development the severity of irradiation effect on growth is more in 10 days old seedlings than in 4 days old seedlings.…”

Section: Resultsmentioning

confidence: 99%

“…Use of reserve nutrients of seeds during germination plays a key role in growth. Thus, phosphate mobilization involving acid phosphatase is of importance, as it is induced with germination [2] [3]. Nitrogen is one of the limiting nutrients for the plant growth and development, with assimilatory nitrate reduction as an important process for its utilization.…”

Section: Introductionmentioning

confidence: 99%

Growth Retardation at Different Stages of Bean Seedlings Developed from Seeds Exposed to Synchrotron X-Ray Beam

Dhamgaye¹,

Dhamgaye²,

Gadre³

2018

ABC

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Irradiated seeds of Phaseolus vulgaris cv. Rajmah using Synchroton X-Ray Beam (BL-07) at RRCAT, Indore at various doses in the range of 0.5 -10 Gy were used to raise the seedling and the growth status at different stages was evaluated. Prior to germination, in the seeds soaked for 24 hours, the water regain remained unaffected by seed irradiation at 1 -10 Gy doses, while the acid phosphatase activity was significantly reduced. Strong correlation (R 2 = 0.685) between irradiation dose and enzyme activity also resulted. Analysing seed irradiation effect on seed development up to 4 days, % germination, germination index (GI), seedling wt, and seedling vigour were non significantly decreased at 5.0 Gy dose. The overall growth of 10 days old seedlings raised from irradiated seeds was substantially reduced at irradiation doses of 2 and 5 Gy exerting strong −ve correlation. Also % germination and seed vigour index (SVI) were prominently decreased due to seed irradiation. The nitrogen status of the seedlings, reflected by nitrate reductase activity (NRA) was significantly reduced in response to irradiation exerting strong correlation. The results demonstrate decreased phosphate mobilization in soaked seeds, time dependent decreased growth being more substantial with longer duration and reduced nitrate assimilation due to seed irradiation with Synchroton X-Ray Beam.

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“…In lentil seeds, histidine-dependent AcP PTP activity increases at the onset of seed germination, thus indicating its possible involvement in seed germination [5]. The expression of maize ( Zea mays ) AcP, which has high activity towards pTyr substrates, also correlates with seed germination [49]. In particular, its protein levels negatively correlate with the phosphorylation of a 14-kDa pTyr protein, a putative intracellular substrate for this AcP [49].…”

Section: Intracellular Substrates Of Histidine-dependent Ptpsmentioning

confidence: 99%

Revisiting histidine-dependent acid phosphatases: a distinct group of tyrosine phosphatases

Veeramani

Lee

Lin

2009

Trends in Biochemical Sciences

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Although classical protein tyrosine phosphatase (PTP) superfamily members are cysteine-dependent, emerging evidence shows that many acid phosphatases (AcPs) function as histidine-dependent PTPs in vivo. These AcPs dephosphorylate phospho-tyrosine substrates intracellularly and could have roles in development and disease. In contrast to cysteine-dependent PTPs, they utilize histidine, rather than cysteine, for substrate dephosphorylation. Structural analyses reveal that active site histidine, but not cysteine, faces towards the substrate and functions as the phosphate acceptor. Nonetheless, during dephosphorylation, both histidine-dependent and cysteine-dependent PTPs use their active site arginine and aspartate for substrate binding and proton donation, respectively. Thus, we propose that they should be referred to as a distinct group of ‘histidine-dependent PTPs’ within the PTP superfamily.

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Induction of acid phosphatase activity during germination of maize (Zea mays) seeds

Cited by 25 publications

References 39 publications

Effect of germination on the phytase activity, phytate and total phosphorus contents of rice (Oryza sativa), maize (Zea mays), millet (Panicum miliaceum), sorghum (Sorghum bicolor) and wheat (Triticum aestivum)

Effect of germination on the phytase activity, phytate and total phosphorus contents of rice (Oryza sativa), maize (Zea mays), millet (Panicum miliaceum), sorghum (Sorghum bicolor) and wheat (Triticum aestivum)

Growth Retardation at Different Stages of Bean Seedlings Developed from Seeds Exposed to Synchrotron X-Ray Beam

Revisiting histidine-dependent acid phosphatases: a distinct group of tyrosine phosphatases

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