scholarly journals Calcium distribution during anther development in Impatiens balsamina

2020 ◽  
Vol 64 ◽  
pp. 178-184
Author(s):  
S.J. YANG ◽  
W.Y. LIANG ◽  
J. SHI ◽  
L. PENG ◽  
R. ZHENG
Keyword(s):  
Anther Development ◽  
Calcium Distribution ◽  
Impatiens Balsamina

Calcium Distribution and Function during Anther Development ofTorenia fournieri(Linderniaceae)

2008 ◽  
Vol 45 (3) ◽  
pp. 195-203 ◽  
Author(s):  
Su-Hong Chen ◽  
Jing-Ping Liao ◽  
Mei-Zhen Luo ◽  
Bruce K. Kirchoff
Keyword(s):  
Anther Development ◽  
Calcium Distribution ◽  
And Function

scholarly journals Calcium Distribution during Anther Development in Oil Tea (Camellia oleifera Abel.)

2015 ◽  
Vol 140 (1) ◽  
pp. 88-93 ◽  
Author(s):  
Dongmei Wei ◽  
Chao Gao ◽  
Deyi Yuan
Keyword(s):  
Plasma Membranes ◽  
Pollen Grains ◽  
Anther Development ◽  
Camellia Oleifera ◽  
Calcium Distribution ◽  
Temporal Features ◽  
Tapetal Cells ◽  
Microspore Stage ◽  
Mother Cells ◽  
The Relationship

The mechanism by which calcium regulates anther development remains unclear. This study investigated the relationship between calcium distribution and anther development in oil tea (Camellia oleifera Abel.) by using the potassium antimonite technique. Before the onset of microsporogenesis, abundant minute calcium precipitates appeared on the plasma membranes of microspore mother cells. Meanwhile, numerous precipitates accumulated in the tapetal cells. After meiosis, calcium precipitates appeared in young microspores. During microspore development, calcium precipitates mainly appeared in the small vacuoles of the cytoplasm. At the late microspore stage, a large vacuole formed, and the number of precipitates in the microspore decreased. The number of precipitates in the tapetal cells decreased as microsporogenesis proceeded. Then, calcium precipitates in the bicellular pollen cytoplasm again increased in number. During bicellular pollen development, the number of calcium precipitates decreased. As the pollen grains matured, only a few calcium precipitates were evident in the pollen cytoplasm. The results of this study, which show the spatial and temporal features of calcium distribution during the anther development of C. oleifera, suggest that calcium distribution is related to anther development.

Changes in polyamine synthesis during anther development and pollen germination in tobacco (Nicotiana tabacum)

1994 ◽  
Vol 92 (1) ◽  
pp. 61-68 ◽  
Author(s):  
Fatiha Chibi ◽  
Angel Jesus Matilla ◽  
Trinidad Angosto ◽  
Dolores Garrido
Keyword(s):  
Nicotiana Tabacum ◽  
Pollen Germination ◽  
Anther Development ◽  
Polyamine Synthesis

Magnesium and Calcium Distribution in World Oceans - A Review

2014 ◽  
Vol 28 (6) ◽  
pp. 52
Author(s):  
Ranasish Roy Chowdhury ◽  
Reshmi Roy Chowdhury
Keyword(s):  
Calcium Distribution

scholarly journals A single nucleotide polymorphism in an R2R3 MYB transcription factor gene triggers the male sterility in soybean ms6 (Ames1)

2021 ◽  
Author(s):  
Junping Yu ◽  
Guolong Zhao ◽  
Wei Li ◽  
Ying Zhang ◽  
Peng Wang ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Glycine Max ◽  
Male Sterility ◽  
Bulked Segregant Analysis ◽  
Soybean Protein ◽  
Anther Development ◽  
Hybrid Breeding ◽  
Myb Transcription Factor ◽  
Male Sterile ◽  
R2r3 Myb

Abstract Key message Identification and functional analysis of the male sterile gene MS6 in Glycine max. Abstract Soybean (Glycine max (L.) Merr.) is an important crop providing vegetable oil and protein. The male sterility-based hybrid breeding is a promising method for improving soybean yield to meet the globally growing demand. In this research, we identified a soybean genic male sterile locus, MS6, by combining the bulked segregant analysis sequencing method and the map-based cloning technology. MS6, highly expressed in anther, encodes an R2R3 MYB transcription factor (GmTDF1-1) that is homologous to Tapetal Development and Function 1, a key factor for anther development in Arabidopsis and rice. In male sterile ms6 (Ames1), the mutant allele contains a missense mutation, leading to the 76th leucine substituted by histidine in the DNA binding domain of GmTDF1-1. The expression of soybean MS6 under the control of the AtTDF1 promoter could rescue the male sterility of attdf1 but ms6 could not. Additionally, ms6 overexpression in wild-type Arabidopsis did not affect anther development. These results evidence that GmTDF1-1 is a functional TDF1 homolog and L76H disrupts its function. Notably, GmTDF1-1 shows 92% sequence identity with another soybean protein termed as GmTDF1-2, whose active expression also restored the fertility of attdf1. However, GmTDF1-2 is constitutively expressed at a very low level in soybean, and therefore, not able to compensate for the MS6 deficiency. Analysis of the TDF1-involved anther development regulatory pathway showed that expressions of the genes downstream of TDF1 are significantly suppressed in ms6, unveiling that GmTDF1-1 is a core transcription factor regulating soybean anther development.

scholarly journals SIFAT FISIKOKIMIA HAND AND BODY CREAM DENGAN PEMANFAATAN EKSTRAK ETANOL BUNGA GEMITIR (Tagetes erecta L.) DAN BUNGA PACAR AIR MERAH (Impatiens balsamina L.) DARI LIMBAH CANANG

2017 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Dewa Ayu Ika Paramitha ◽  
James Sibarani ◽  
Ni Made Suaniti
Keyword(s):  
Antioxidant Activity ◽  
Physicochemical Properties ◽  
National Standard ◽  
Tagetes Erecta ◽  
Basic Formula ◽  
Impatiens Balsamina ◽  
Ethanol Extracts ◽  
Tagetes Erecta L ◽  
Microbial Numbers

ABSTRAK: Pada penelitian ini dilakukan pengembangan formula sediaan hand and body cream dengan memanfaatkan sumber antioksidan yang dimiliki oleh dua jenis ekstrak etanol yaitu ekstrak bunga pacar air merah (Impatiens balsamina L.) dan bunga gemitir (Tagetes erecta L.) dengan taraf perlakuan sebesar 1% dari masing-masing ekstrak (FPM dan FG) dan campuran 0,5% ekstrak pacar air merah dan 0,5% ekstrak gemitir (FCPMG). Pengujian terhadap  produk dilakukan pada sifat fisikokimia  meliputi pH, viskositas, aktivitas antioksidan, angka lempeng total mikroba, dan ukuran partikel. Berdasarkan hasil pengujian produk hand and body cream yang dihasilkan memiliki antioksidan yang cukup tinggi sebagai produk perawatan tubuh dengan penambahan 1% ekstrak etanol pacar air merah, gemitir dan campuran dari kedua ekstrak etanol. Kualitas produk hand and body cream yang dihasilkan baik dan memenuhi standar mutu SNI dari aspek nilai pH, viskositas, dan nilai ALT. Warna yang dihasilkan mulai dari warna kuning kemerahan sampai dengan warna kuning, dan partikel yang dimiliki oleh produk adalah nanopartikel dengan sistem polidispersi. ABSTRACT: Formulations of hand and body creams using ethanol extracts of flowers of red Impatiens balsamina L. And Tagetes erecta L. As antioxidant sources have been developed.  One percent of  extracts (FPM and FG) and the mixture of 0.5% each extracts (FCPMG) were added to the basic formula. The analysis of physicochemical properties of the products was conducted including pH, viscosity, antioxidant activity, the size of the particles, and total microbial plate numbers. Based on the results, the quality of the hand and body creams meet the national standard of Indonesia (SNI) regarding to pH, viscosity, and the total microbial numbers. The colours of the hand and body creams resulted are reddish yellow to yellow with polydispersion nanoparticles.

In vitro investigation of calcium distribution and tissue thickness in the human thoracic aorta

2002 ◽  
Vol 23 (3) ◽  
pp. 555-566 ◽  
Author(s):  
P J Dunmore-Buyze ◽  
M Moreau ◽  
A Fenster ◽  
D W Holdsworth
Keyword(s):  
Thoracic Aorta ◽  
Tissue Thickness ◽  
Calcium Distribution ◽  
In Vitro Investigation

Calcium distribution in fertile and sterile anthers of a photoperiod-sensitive genic male-sterile rice

Planta ◽  
1998 ◽  
Vol 204 (2) ◽  
pp. 183-192 ◽  
Author(s):  
Hui Qiao Tian ◽  
Anxiu Kuang ◽  
Mary E. Musgrave ◽  
Scott D. Russell
Keyword(s):  
Male Sterile ◽  
Calcium Distribution ◽  
Photoperiod Sensitive
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