Absence of Callose and Tetrad in the Microsporogenesis of Pandanus odoratissimus with Well-formed Pollen Exine

1991 ◽  
Vol 67 (1) ◽  
pp. 29-33 ◽  
Author(s):  
K. PERIASAMY ◽  
J. AMALATHAS
Keyword(s):  
Pollen Exine ◽  
Pandanus Odoratissimus

scholarly journals In Vitro Assessment of Antioxidant, Thrombolytic, Antimicrobial Activities of Medicinal Plant Pandanus odoratissimus L. Leaves Extract

2020 ◽  
Vol 12 (3) ◽  
pp. 379-390
Author(s):  
F. I. Penu ◽  
S. M. Ivy ◽  
F. Ahmed ◽  
J. Uddin ◽  
M. S. Hossain ◽  
...  
Keyword(s):  
Soluble Fraction ◽  
Blood Clot ◽  
Folk Medicine ◽  
Maximum Level ◽  
Antimicrobial Activities ◽  
Total Phenolic ◽  
Thrombolytic Activity ◽  
Standard Drug ◽  
Pandanus Odoratissimus

The present study was carried out to investigate phytochemical, antioxidant; antimicrobial, thrombolytic activity and estimate total phenolic, total flavonoid content of Pandanus odoratissimus (p.odoratissimus) leaves of methanol extract. In thrombolytic activity, aqueous soluble fraction (AQSF) exhibited highest percentage (46.58 %) of potential to lyse blood clot compared to standard drug streptokinase (69.52 %). In antimicrobial assay, dichloromethane soluble fraction (DCMSF) explored the highest diameter of clear zone of inhibition against both gram positive (19.60 ± 0.12 mm) and gram negative (20.00 ± 0.20 mm) bacteria compared to standard antibiotic, Kanamycin (50.00 ± 0.19). Levels of antioxidant were determined by DPPH assay followed by calculated IC50 values of different Kupchan extracts. The methyl soluble fraction (MSF) showed the lowest level of IC50 value (36.70 ± 0.32 µg/mL) in comparison to ascorbic acid (12.48 ± 0.09 µg/mL) while MSF disclosed the maximum level (62.19 ±  0.26 mg of GAE/g of extract) of total phenolic content in the extracts of P. odoratissimus. This study was conducted to validate the P. odoratissimus leaves used as a folk medicine such as, antioxidant, thrombolytic, and antimicrobial potential.

OsFLA1 encodes a fasciclin-like arabinogalactan protein and affects pollen exine development in rice

2022 ◽  
Author(s):  
Yao Deng ◽  
Yingchun Wan ◽  
Weichi Liu ◽  
Lisha Zhang ◽  
Kai Zhou ◽  
...  
Keyword(s):  
Arabinogalactan Protein ◽  
Pollen Exine

Anti-Inflammatory Activity of Pandanus odoratissimus Extract

2010 ◽  
Vol 6 (3) ◽  
pp. 311-314 ◽  
Author(s):  
Ramesh Londonkar ◽  
Abhaykumar Kamble ◽  
V. Chinnappa Reddy
Keyword(s):  
Inflammatory Activity ◽  
Pandanus Odoratissimus ◽  
Anti Inflammatory

scholarly journals Molecular regulation ofZmMs7required for maize male fertility and development of a dominant male-sterility system in multiple species

2020 ◽  
Vol 117 (38) ◽  
pp. 23499-23509 ◽  
Author(s):  
Xueli An ◽  
Biao Ma ◽  
Meijuan Duan ◽  
Zhenying Dong ◽  
Ruogu Liu ◽  
...  
Keyword(s):  
Male Sterility ◽  
Seed Production ◽  
Target Genes ◽  
Hybrid Seed ◽  
Molecular Regulation ◽  
Dominant Male ◽  
Hybrid Seed Production ◽  
Maize Breeding ◽  
Pollen Exine ◽  
Multiple Species

Understanding the molecular basis of male sterility and developing practical male-sterility systems are essential for heterosis utilization and commercial hybrid seed production in crops. Here, we report molecular regulation by genic male-sterility genemaize male sterility 7(ZmMs7) and its application for developing a dominant male-sterility system in multiple species.ZmMs7is specifically expressed in maize anthers, encodes a plant homeodomain (PHD) finger protein that functions as a transcriptional activator, and plays a key role in tapetal development and pollen exine formation. ZmMs7 can interact with maize nuclear factor Y (NF-Y) subunits to form ZmMs7-NF-YA6-YB2-YC9/12/15 protein complexes that activate target genes by directly binding to CCAAT box in their promoter regions. Premature expression ofZmMs7in maize by an anther-specific promoterp5126results in dominant and complete male sterility but normal vegetative growth and female fertility. Early expression ofZmMs7downstream genes induced by prematurely expressed ZmMs7 leads to abnormal tapetal development and pollen exine formation inp5126-ZmMs7maize lines. Thep5126-ZmMs7transgenic rice andArabidopsisplants display similar dominant male sterility. Meanwhile, themCherrygene coupled withp5126-ZmMs7facilitates the sorting of dominant sterility seeds based on fluorescent selection. In addition, both thems7-6007recessive male-sterility line andp5126-ZmMs7Mdominant male-sterility line are highly stable under different genetic germplasms and thus applicable for hybrid maize breeding. Together, our work provides insight into the mechanisms of anther and pollen development and a promising technology for hybrid seed production in crops.

scholarly journals IRREGULAR POLLEN EXINE1 Is a Novel Factor in Anther Cuticle and Pollen Exine Formation

2016 ◽  
Vol 173 (1) ◽  
pp. 307-325 ◽  
Author(s):  
Xiaoyang Chen ◽  
Hua Zhang ◽  
Huayue Sun ◽  
Hongbing Luo ◽  
Li Zhao ◽  
...  
Keyword(s):  
Pollen Exine ◽  
Anther Cuticle

scholarly journals Cytochrome P450 Family Member CYP704B2 Catalyzes the ω -Hydroxylation of Fatty Acids and Is Required for Anther Cutin Biosynthesis and Pollen Exine Formation in Rice

2010 ◽  
Vol 22 (1) ◽  
pp. 173-190 ◽  
Author(s):  
Hui Li ◽  
Franck Pinot ◽  
Vincent Sauveplane ◽  
Danièle Werck-Reichhart ◽  
Patrik Diehl ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Cytochrome P450 ◽  
Family Member ◽  
Pollen Exine ◽  
Cytochrome P450 Family

scholarly journals Grass-Specific EPAD1 Is Essential for Pollen Exine Patterning in Rice

2020 ◽  
Vol 32 (12) ◽  
pp. 3961-3977
Author(s):  
HuanJun Li ◽  
Yu-Jin Kim ◽  
Liu Yang ◽  
Ze Liu ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Pollen Exine ◽  
Exine Patterning

ChemInform Abstract: Antioxidative Activities of Constituents Isolated from Pandanus odoratissimus.

ChemInform ◽  
2010 ◽  
Vol 30 (18) ◽  
pp. no-no
Author(s):  
Ting-Ting Jong ◽  
Shang-Whang Chau
Keyword(s):  
Pandanus Odoratissimus
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