Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): An evolutionary approach to dioecy in the family

Zini, Lucía Melisa; Galati, Beatriz Gloria; Solís, Stella Maris; Ferrucci, María Silvia

doi:10.1016/j.flora.2012.07.003

Cited by 17 publications

(16 citation statements)

References 27 publications

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“…Most studies on male-sterility of flowering plants focused on investigating the development of pollen sterility, and only a few focused on indehiscent anthers (Sanders et al 1999;Steiner-Lange et al 2003;Strittmatter et al 2006;Li et al 2010;Solís et al 2010;Zini et al 2012;Fei et al 2016;Yadav et al 2016 The same situation was also found in species of Sapindaceae, where failure in anther dehiscence of functionally female flowers is characteristic of the family (Solís et al 2010;Zini et al 2012;Yadav et al 2016;Luo et al 2017).…”

Section: The Relationship Between Anther Indehiscence and Tapetum Abnmentioning

confidence: 97%

“…However, the tapetal cytoplasm in functionally female flowers did not degenerate completely as in male flowers at this stage, but was highly vacuolated, leading to the development of the persistent tapetal cells characterized by many small vacuoles or cell remnants at the mature pollen stage. Zini et al (2012) Li, N., Zhang, D.S., Liu, H.S., Yin, C.S., Li, X.X., Liang, W.Q., Yuan, Zh., Xu, B., Chu, H.W., Wang, J., Wen, T.Q., Huang, H., Luo, D., Ma, H., and Zhang, D.B. 2006 171x97mm (300 x 300 DPI)…”

Section: The Relationship Between Anther Indehiscence and Tapetum Abnmentioning

confidence: 99%

“…in species from the Cactaceae (Strittmatter et al 2002(Strittmatter et al , 2006Flores-Rentería et al D r a f t 2013), microsporogenesis and microgametogenesis abnormalities in Vitis vinifera (Caporali et al 2003), and sometimes both, such as species in Sapindaceae where the developmental abnormalities of the tapetum, endothecium and microspores result in indehiscent anthers (Solís et al 2010;Zini et al 2012). Moreover, ontogenetic studies on a range of early divergent angiosperm families have led to an understanding of the easy occurrence of unisexuality and the diversity of their developmental pathways (Fu et al 2009;Xu and Ronse De Craene 2010;Dong et al 2012;Xu 2016, 2017).…”

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confidence: 99%

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Comparative anther and pollen tetrad development in functionally monoeciousPseuduvaria trimera(Annonaceae), and evolutionary implications for anther indehiscence

Yang

2018

Botany

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The multiple evolutionary origins and diverse morphologies of unisexual flowers in angiosperms indicate that many different developmental mechanisms [sporophytic and (or) gametophytic tissues] underlie patterns of sex differentiation, yet, these mechanisms leading to unisexuality remain largely unresolved. In Pseuduvaria trimera (W.G. Craib) Y.C.F. Su & R.M.K. Saunders, morphologically hermaphroditic flowers are functionally female due to indehiscent anthers, but the developmental and anatomical mechanisms preventing their dehiscence are still unknown. Anther and pollen development were compared in both male and functionally female flowers using histological observations to test whether anther indehiscence results from a sporophytic and (or) gametophytic default. The epidermis, endothecium, middle layers, and pollen development were identical in the two floral morphs, but variations occurred in the tapetum and stomium regions. In male flowers, concurrently with the binucleate tapetal cell degeneration, the appearance of intercellular spaces and lysis of the stomium region cells lead to anther dehiscence. Conversely, in the functionally female flowers, trinucleate tapetum appears with delayed degradation, and the persistent cells with a highly vacuolated cytoplasm and stomium region remain intact at maturity. Sporophytic tissues with tapetum abnormalities and stomium integrity are, thus, responsible for anther indehiscence. Lack of microspore rotation in P. trimera might indicate a different evolutionary origin of pollen tetrad formation in this family.

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Section: The Relationship Between Anther Indehiscence and Tapetum Abnmentioning

confidence: 97%

Section: The Relationship Between Anther Indehiscence and Tapetum Abnmentioning

confidence: 99%

mentioning

confidence: 99%

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Comparative anther and pollen tetrad development in functionally monoeciousPseuduvaria trimera(Annonaceae), and evolutionary implications for anther indehiscence

Yang

2018

Botany

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“…Kriswiyanti et al (2008) penyebab serbuk sari steril antara lain adalah serbuk sari yang dibentuk normal tetapi tidak dilepaskan karena dinding anther tidak pecah, anther tertekan, gugur, berbentuk pipih menyerupai daun. Pada anther yang tidak membuka, selsel epidermis dari bunga jantan mengalami dehidrasi dan menunjukkan kutikula sedikit lurik dan menjadi pucat, dinding anther terdiri dari sel-sel epidermal yang kering (Zini et al, 2012).…”

Section: Hasil Dan Pembahasanunclassified

Studi Viabilitas Serbuk Sari Pada Salak Bangkalan

Setiawan

2019

rekayasa

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ABSTRAK Salak (Salacca zalacca) banyak dibudidayakan di Kabupaten Bangkalan. Permasalahan penyerbukan seperti kesuburan serbuk sari menjadi masalah utama dalam produksi salak di Bangkalan. Penelitian ini bertujuan untuk mempelajari viabilitas serbuk sari dari bunga jantan pada salak Bangkalan. Sampel bunga dikoleksi dari perkebunan salak di Desa Kramat, Kecamatan Bangkalan, Kabupaten Bangkalan. Pengamatan dan pembuatan preparat dilakukan di Laboratorium Produksi, Fakultas Pertanian, Universitas Trunojoyo Madura pada bulan Mei 2018. Pengamatan fertilitas serbuk sari dilakukan di bawah mikroskop setelah dilakukan pewarnaan terhadap serbuk sari dengan larutan Lugol 1%. Hasil penelitian menunjukkan viabilitas serbuk sari pada bunga salak jantan kuning lebih tinggi dibandingkan dengan bunga salak jantan merah dengan perbandingan 95% dan 10%. Kata kunci: Anther, Madura, Serbuk sari, Salacca zalacca, SterilStudy on Pollen Viability of Bangkalan Snake FruitABSTRACT Snake fruit (Salacca zalacca (Gaertner) Voss) is widely cultivated in Bangkalan District. Pollination problems such as pollen fertility are a major problem in the production of salak in Bangkalan. The objective of the study was to determine the pollen viability of Bangkalan snake fruit. Flower sample was collected from salak gardens in Kramat Village, Bangkalan and pollen analysis were conducted at the Production Laboratory, Faculty of Agriculture, the University of Trunojoyo Madura in May 2018. Observation of fertility of pollen was conducted under a microscope after pollen staining with Lugol 1%. The results showed that the pollen viability of male yellow flower was higher than the red one with a ratio of 95% and 10%, respectively. Keywords: Anther, Madura, Pollen, Salacca zalacca, Sterile

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“…The formation of anthers undergoes a very complicated process. At the microsporocyte stage, the anther wall consists of four layers: epidermis, endothecium, middle layer and tapetum [19]. Proper programmed cell death (PCD) leading to controlled degradation of layers of anther wall is very important for the development of functional pollen grains.…”

Section: Introductionmentioning

confidence: 99%

Characterization and transcriptome analysis of a dominant genic male sterile cotton mutant

et al. 2020

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Background: Male sterility is an efficient trait for hybrid seed production and germplasm innovation. Until now, most studies on male sterility were on cytoplasmic and recessive genic sterility, with few on dominant genic male sterility, especially in cotton, due to lack of such mutant. Results: We discovered a natural male sterile (MS) Sea Island cotton (G. barbadense) mutant. Genetic analysis showed the mutation was caused by a dominant mutation in a single nuclear gene. Comparative cytological observation of anther sections from MS and wild-type (WT) uncovered cellular differences in anther at and after the tetrad stage of pollen mother cells (PMC). In the MS anthers, the outer wall of pollen grains was free of spinules, the tapetum was vacuolated and showed delayed degradation, consequently, no functional pollen grains. Comparison of transcriptomes from meiosis, tetrad, mononuclear and binuclear pollen, and pollen maturation stages identified 13,783 non-redundant differentially expressed genes (DEGs) between MS and WT. Based on the number of DEGs, analyses of enriched GO terms and KEGG pathways, it was evident that significant transcriptomic changes occurred at and after the tetrad stage, consistent with cytological observation, and that the major differences were on metabolism of starch, sucrose, ascorbate, aldarate, alanine, aspartate and glutamate, and biosynthesis of cutin, suberine and wax. WGCNA analysis identified five modules containing 920 genes highly related to anther development, especially the greenyellow module with 54 genes that was highly associated with PMC meiosis and tetrad formation. A NAC transcription factor (Gh_D11G2469) was identified as a hub gene for this module, which warrants further functional characterization. Conclusions: We demonstrated that the MS trait was controlled by a single dominant nuclear gene and caused by delayed tapetum degradation at the tetrad stage. Comparative transcriptome analysis and gene network construction identified DEGs, enriched GO terms and metabolic pathways, and hub genes potentially associated with anther development and the MS trait. These results contribute to our understanding of dominant genic male sterility (DGMS) and provided source for innovation of cotton germplasm.

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Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): An evolutionary approach to dioecy in the family

Cited by 17 publications

References 27 publications

Comparative anther and pollen tetrad development in functionally monoeciousPseuduvaria trimera(Annonaceae), and evolutionary implications for anther indehiscence

Comparative anther and pollen tetrad development in functionally monoeciousPseuduvaria trimera(Annonaceae), and evolutionary implications for anther indehiscence

Studi Viabilitas Serbuk Sari Pada Salak Bangkalan

Characterization and transcriptome analysis of a dominant genic male sterile cotton mutant

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