Impact of C‐terminal truncations in the Arabidopsis Rab Escort Protein (REP) on REP‐Rab interaction and plant fertility

Abstract Reproductive processes including male and female lines, embryo and endosperm development were studied in Cardaminopsis arenosa (syn. Arabidopsis arenosa) growing on two metalliferous sites (Bukowno and Bolesław, S. Poland), rich in Zn, Pb, Cd and other metals. Disturbances of developmental processes and necroses observed in anthers and ovules influenced plant fertility and seed set of plants from both metal-polluted sites. In anthers, disturbances and necrosis during male meiosis and pollen development occurred at low frequency (4-5%). Pollen grain viability was very high, reaching over 90%. In ovules the frequency of abnormal meiosis, female gametophyte developmental disturbances and necrosis was high, 23.5-28% depending on site. The polluted environment also affected embryo and endosperm. Necrosis of whole generative structures decreased plant fertility. This study indicates that the range of disturbances and necroses in embryological structures and processes (at gametophyte level) gives a set of useful characters to determine plant tolerance to stress, complementary to many tolerance characters at the sporophyte level of plant ontogenesis.

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Production of Restorer Lines from Segregating Progenies of Brassica napus L. Having Good Agronomic Value

International Journal of Applied Sciences and Biotechnology ◽

10.3126/ijasbt.v8i4.31352 ◽

2020 ◽

Vol 8 (4) ◽

pp. 400-409

Author(s):

A. K. M. Aminul Islam ◽

F. M. Era ◽

N. K. Aminul Chowdhury

Keyword(s):

Brassica Napus ◽

Seed Yield ◽

Seed Weight ◽

Pollen Sterility ◽

The Other ◽

Restorer Line ◽

Brassica Napus L ◽

Maximum Value ◽

Plant Fertility ◽

Number Of Seeds

Forty four testcross progenies obtained from crossing between five CMS and forty one candidate lines were evaluated both in field and laboratory condition to identify candidate restorer line(s). Nineteen testcross progenies were recorded as fully fertile with 100% plant fertility by counting the number of fertile plants from the total number of plants per lines. On the other hand from pollen fertility test, 11 testcross progenies [206A × 001(6), 9905A × 030(2), 9905A × 027(6) (0.57), 206A × 37(1) (0.68), 9904A × 027(4) (0.83), 248A × 020(6) (1.08), 248A × 018 (1.12), 248A × 022 (1.13), 248A × 017 (1.58), 248A × 038(2) (1.96) and 248A × 001(6) (2.02)] were found with 0-2.02% pollen sterility that could be mentioned as fertile or restorer lines for making hybrids. Agronomic performances were also satisfactory for these selected test cross progenies. The genotype 248A × 017 took the shortest time (30.00) for first flowering as well as ripening followed by 248A × 007(1). The highest number of pods per plant was observed in the testcross progeny 248A × 022 (649.59) and the highest number of seeds per pod (30.33) in 248A × 020(6). For seed weight per plant, 206A × 001(6) was recorded with maximum value (0.08g) while the lowest (23.33) number of seeds per plant was found in this progeny. In case of seed yield per plant, 248A × 022 gave the highest yield (30.30). The seed yield of the progenies 248A × 017 (23.49), 9905A × 027(6) (20.39), 248A × 001(6) (17.26), 9904A × 027(4) (17.02) and 248A × 038(2) (16.53) were also in the highest level.

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Review: Synthesis of Urea in Several Methods

Mediterranean Journal of Chemistry ◽

10.13171/mjc02103121554arp ◽

2021 ◽

Vol 11 (2) ◽

pp. 146

Author(s):

Asep Rizki Pradana ◽

Asep Royani ◽

Kiki Zulfikri ◽

Nabila Tuffahati ◽

Rahma Zulfa Azzahra ◽

...

Keyword(s):

Fly Ash ◽

Plant Growth ◽

Environmental Pollution ◽

Soil Nitrogen ◽

Slow Release ◽

Raw Material ◽

Effective Utilization ◽

Urea Fertilizer ◽

Release Method ◽

Plant Fertility

Urea (CO (NH)2) is one of the compositions in making fertilizer. Fertilizer is crucial, especially for plant growth (affecting plant fertility). If a plant had urea fertilizer on the soil, nitrogen in the fertilizer releases quickly, and it will cause environmental pollution. Therefore, many studies want to develop urea fertilizer to be more efficient to use. The purpose of this review is to find the most appropriate method for the efficient use of urea as seen from the material used, the technique used, and the results obtained. This review shows that the most appropriate method is the slow release method with NaOH and fly ash ingredients. Because this method can increase the effective utilization of urea, reduce environmental pollution, and be relatively more straightforward, the raw material is more affordable and spread widely in the market.

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Changes in Yield Potential of Traditional Rice Cultivars with Variability in Plant Height, Tillers Per Plant, Fertility and Days to Maturity

Journal of Scientific Research and Reports ◽

10.9734/jsrr/2015/12042 ◽

2015 ◽

Vol 4 (2) ◽

pp. 114-122 ◽

Cited By ~ 1

Author(s):

A. Ranawake ◽

U. Amarasinghe

Keyword(s):

Plant Height ◽

Yield Potential ◽

Rice Cultivars ◽

Days To Maturity ◽

Plant Fertility ◽

Traditional Rice

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Soil and Plant Fertility Management for Soybeans

10.31274/farmprogressreports-180814-1204 ◽

2012 ◽

Author(s):

James M. Lee

Keyword(s):

Fertility Management ◽

Plant Fertility

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A transposon surveillance mechanism that safeguards plant male fertility during stress

10.1101/2020.10.03.324764 ◽

2020 ◽

Author(s):

Yang-Seok Lee ◽

Robert Maple ◽

Julius Dürr ◽

Alexander Dawson ◽

Saleh Tamim ◽

...

Keyword(s):

Small Rnas ◽

Male Fertility ◽

Molecular Mechanisms ◽

Mutagenic Activity ◽

Economic Losses ◽

Rna Targets ◽

Maize Plants ◽

Surveillance Mechanism ◽

Constrained Conditions ◽

Plant Fertility

ABSTRACTAlthough plants are able to withstand a range of environmental conditions, spikes in ambient temperature can impact plant fertility causing reductions in seed yield and significant economic losses1,2. Therefore, understanding the precise molecular mechanisms that underpin plant fertility under environmental constraints is critical to safeguard future food production3. Here, we identified two Argonaute-like proteins whose activities are required to sustain male fertility in maize plants under high temperatures. We found that MALE-ASSOCIATED ARGONAUTE 1 and 2 (MAGO1 and MAGO2) associate with temperature-induced phased secondary small RNAs in pre-meiotic anthers and are essential to control the activity of retrotransposons in male meiocyte initials. Biochemical and structural analyses revealed how MAGO2 activity and its interaction with retrotransposon RNA targets are modulated through the dynamic phosphorylation of a set of highly conserved surface-located serine residues. Our results demonstrate that an Argonaute-dependent RNA-guided surveillance mechanism is critical in plants to sustain male fertility under environmentally constrained conditions by controlling the mutagenic activity of transposons in male germ cells.

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Investigations in the Triticinae I. Colchicine techniques for chromosome doubling in interspecific and intergeneric hybridization

The Journal of Agricultural Science ◽

10.1017/s0021859600045457 ◽

1950 ◽

Vol 40 (1-2) ◽

pp. 9-18 ◽

Cited By ~ 38

Author(s):

G. D. H. Bell

Keyword(s):

Differential Cross ◽

Chromosome Doubling ◽

Interspecific Crosses ◽

Intergeneric Hybridization ◽

Intergeneric Crosses ◽

Small Glass ◽

Group Response ◽

Cut Leaves ◽

Plant Fertility ◽

Methods Of Application

1. Sixteen colchicine treatments, involving five main methods of application and six concentrations, have been used on Triticum interspecific crosses, Triticum—Aegilops intergeneric crosses and Agropyron—Triticum intergeneric crosses.2. The efficacy of the major treatments in terms of plant survival, plant fertility and ear fertility has been compared, and the most successful method of application has been found to be absorption through the cut leaves—i.e. capping cut-back tillers with a small glass phial containing colchicine.3. Fertility induced by colchicine is not complete. In plants producing grain, every ear is not necessarily fertile, nor are all spikelets in fertile ears usually fertile.4. Evidence has been obtained of differential cross response to colchicine action, and also of cross-group response to particular treatments.

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