THE ANATOMY OF HAUSTORIA AND RELATED ORGANS OF GAIADENDRON (LORANTHACEAE)

1965 ◽  
Vol 43 (6) ◽  
pp. 687-694 ◽  
Author(s):  
Job Kuijt
Keyword(s):  
Secondary Growth ◽  
Root Hairs ◽  
Root Cap ◽  
Vascular Pattern ◽  
Anatomical Features ◽  
Distinct Root ◽  
Internal Organization ◽  
Close Relationship ◽  
Relationship Of ◽  
Secondary Roots

The internal organization of the radicle, tuber, secondary roots, and haustoria is described for Gaiadendron punctatum (Ruíz & Pavon) G. Don. The root is characterized by a distinct root cap, an endodermis, and a tetrarch vascular pattern which is to some degree perpetuated after secondary growth sets in. Root hairs are absent from radicle and secondary roots. Haustoria are of the santalaceous type although a "gland" has not yet been found. Anatomical features confirm a close relationship of the genus with Atkinsonia and Nuytsia and emphasize the primitive position of these three genera within Loranthaceae–Loranthoideae.

NOTES ON THE GENUS PROTARCHOIDES (HYMEN., ICHNEUMONIDAE)

1938 ◽  
Vol 70 (11) ◽  
pp. 230-232 ◽  
Author(s):  
C. Stuart Walley
Keyword(s):  
North American ◽  
North American Species ◽  
Close Relationship ◽  
Relationship Of

The following notes were assembled in arranging the Protarchoides material in the National Collection. In establishing the identity of Protarchoides mellipes (Prov.) it has been found necessary to synonymize one species. A species allied to mellipes is described as new and a table is provided for the separation of the four known North American species. The recording of Trichiosoma as host for a member of this genus is further evidence of the close relationship of the genus with Protarchus Foer.

scholarly journals Study of the 49 kDa excretory-secretory protein gene of Trichinella nativa and Trichinella spiralis

2007 ◽  
Vol 44 (3) ◽  
pp. 120-125 ◽  
Author(s):  
B. Zheng ◽  
L. Xiao ◽  
X. Wang ◽  
D. Li ◽  
Y. Lu ◽  
...  
Keyword(s):  
Prokaryotic Expression ◽  
Protein Gene ◽  
Trichinella Spiralis ◽  
Secretory Protein ◽  
Rt Pcr ◽  
Prokaryotic Expression Vector ◽  
Close Relationship ◽  
Bamhi Site ◽  
Relationship Of ◽  
Trichinella Nativa

AbstractTo study the function of the 49 kDa excretory-secretory (ES) protein gene (P49) of Trichinella, the genes was amplified by RT-PCR from RNA of Trichinella spiralis and Trichinella nativa and several Chinese Trichinella isolates of domestic animals, and sequenced after being cloned. The amplified products of these parasites produced bands of about 950 bp. The 97.2 % to 100 % nucleotides identity and 94.3 % to 100 % identity of deduced amino acids among P49 gene of these Trichinella strains showed the close relationship of these parasites. The P49 gene of T. nativa was cloned into the BamHI site of the prokaryotic expression vector pET-30a, and the recombinant vector was expressed. The expressed product was 40.8 kDa in size. In Western blot analysis, the expressed product was reactive to sera of mice infected with T. nativa, T. spiralis and their Chinese geographical strains.

Cytological and histochemical characteristics of the axenic root surface of Alnus glutinosa

1986 ◽  
Vol 64 (10) ◽  
pp. 2216-2226 ◽  
Author(s):  
Yves Prin ◽  
Mireille Rougier
Keyword(s):  
Cell Wall ◽  
Root Hair ◽  
Root Hairs ◽  
Root Apex ◽  
Alnus Glutinosa ◽  
Root Surface ◽  
Infection Process ◽  
Root Cap ◽  
A Cell ◽  
Histochemical Tests

The aim of the present study was to investigate the Alnus root surface using seedlings grown axenically. This study has focused on root zones where infection by the symbiotic actinomycete Frankia takes place. The zones examined extend from the root cap to the emerging root hair zone. The root cap ensheaths the Alnus root apex and extends over the root surface as a layer of highly flattened cells closely appressed to the root epidermal cell wall. These cells contain phenolic compounds as demonstrated by various histochemical tests. They are externally bordered by a thin cell wall coated by a thin mucilage layer. The root cap is ruptured when underlying epidermal cells elongate, and cell remnants are still found in the emerging root hair zone. Young emerging root hairs are bordered externally by a cell wall covered by a thin mucilage layer which reacts positively to the tests used for the detection of polysaccharides, glycoproteins, and anionic sites. The characteristics of the Alnus root surface and the biological function of mucilage and phenols present at the root surface are discussed in relation to the infection process.

618. Host-phage relationship of cheese starter organisms: I. Interaction of phage races with a strain of Streptococcus lactis and its lysogenic and resistant derivatives

1956 ◽  
Vol 23 (1) ◽  
pp. 120-125 ◽  
Author(s):  
J. Czulak ◽  
Jill Naylor
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Bacterial Strain ◽  
Acquired Resistance ◽  
Secondary Growth ◽  
The Other ◽  
Physiological Changes ◽  
Streptococcus Lactis ◽  
Lysogenic Culture ◽  
Relationship Of

A lysogenic culture, prepared in the laboratory from a strain of Streptococcus lactis, was used as a cheese starter in commercial factories. It was attacked in turn by two other unrelated phage races. The lysogenic condition, which involved slight morphological and physiological changes, persisted in the subsequent forms resistant to one or both the new phage races. Acquired resistance to any one of the three phages did not protect the culture from the other two phages.In nature such interactions between phage races and lactic acid bacteria must be constantly taking place, giving rise to similarly related strains.Two of the three phage races produced spreading haloes around their plaques due to a lysin released during phage action. The lysin may also interfere with the survival of secondary growth after attack by these phage races. Production of this type of lysin is thus a property of the phage race and not of the bacterial strain.

Actinomycetes as the basis of Probiotics for Plants

2021 ◽  
Vol 37 (2) ◽  
pp. 3-19
Author(s):  
A.A. Gagarina
Keyword(s):  
Plant Growth ◽  
Wide Distribution ◽  
Present Review ◽  
Rhizosphere Microorganisms ◽  
Current State ◽  
Close Relationship ◽  
Minimum Requirements ◽  
Stimulate Plant Growth ◽  
Relationship Of ◽  
Streptomyces Genus

The present review describes the concept of probiotics for plants and analyzes the prospects for using actinomycetes as producers of these drugs. The minimum requirements for plant probiotic microorganisms are proposed, similar to those for human probiotic microorganisms. These are utility, efficiency and safety for plants, as well as mandatory isolation from plant samples. It is noted that these requirements are usually met by endophytic and rhizosphere microorganisms that stimulate plant growth and provide them with protection from phytopathogens. Evidence is given for the possibility of attributing actinomycetes to probiotic plant bacteria, due to the close relationship of these microorganisms with plants, their wide distribution in populations of endophytic and rhizosphere microorganisms, and the presence of phytoregulatory activity. The review provides examples of genera and species of actinomycetes that are promising producers of probiotics for agronomically important crops. The most studied and commercialized of them are representatives of the Streptomyces genus. The current state, prospects and problems in commercialization of probiotics based on actinomycetes are discussed. probiotic microorganisms of plants, associative actinomycetes, endophytes, rhizosphere, biological preparations

scholarly journals USTAZ ABU BAKAR AL-BAQIR: ULAMA DAN PEJUANG KEMERDEKAAN TANAH MELAYU

2018 ◽  
Author(s):  
KAMARUL AFENDEY BIN HAMIMI ◽  
AHMAD ZULLAILI BIN ZAMRI
Keyword(s):  
Religious Education ◽  
Qualitative Methodology ◽  
Primary Sources ◽  
Religious Leader ◽  
Sources Of Information ◽  
Secondary Sources ◽  
British Rule ◽  
National Archives ◽  
Close Relationship ◽  
Relationship Of

Kertas kerja ini menganalisis peranan Ustaz Abu Bakar al-Baqir iaitu lama reformis tempatan yang konsisten menentang British sehingga terpenjara pada 1948. Beliau turut menubuhkan Maahad al-Ehya Assyariff untuk memodenkan sistem pendidikan pondok di samping meniupkan semangat kemerdekaan kepada pelajar dan masyarakat di sekelilingnya. Objektif kajian ini adalah untuk mengetengahkan sumbangan Ustaz Abu Bakar al-Baqir sebagai seorang ulama dan pejuang kemerdekaan menentang British sekitar 1934 sehingga 1957 di Perak. Kajian ini berbentuk historiografi yang menggunakan kaedah kualitatif dengan pendekatan analisis kandungan. Dua jenis sumber digunakan dalam kajian ini iaitu sumber primer dan sekunder. Sumber primer adalah seperti mendapatkan dokumen dan fail di Arkib Negara Malaysia, sumber pejabat kolonial British di samping menemu bual ahli keluarga dan murid Ustaz Abu Bakar al-Baqir. Sumber sekunder pula diperoleh melalui buku, surat khabar dan kertas kerja seminar yang berkaitan dengan perjuangan beliau. Hasil kajian mendapati para pelajarnya terdedah dengan semangat kemerdekaan ini ekoran guru-guru reformis dari Indonesia yang terdedah dengan perjuangan menentang Belanda mengajar di Maahad al-Ehya Assyariff. Selain itu, hubungan baik Ustaz Abu Bakar al-Baqir dengan Ibrahim Yaakub selaku penggerak Kesatuan Melayu Muda (KMM) dan Dr. Burhanuddin al-Helmy yang memimpin Parti Kebangsaan Melayu Muda (PKMM) menjadikan Maahad al-Ehya Assyariff sebagai markas politik menentang British sehingga tertubuhnya Parti Hizbul Muslimin di bawah pimpinan Ustaz Abu Bakar al-Baqir. Kata kunci: Maahad al-Ehya Assyariff, Hizbul Muslimin, British, Kaum Muda, Parti Kebangsaan Melayu Malaya (PKMM), Kesatuan Melayu Muda (KMM). This paper attempts to analyze the role played by Ustaz Abu Bakar al-Baqir, a local reformist religious leader who consistently opposed the British until he was imprisoned by them in 1948. He established the Maahad al-Ehya Assyariff with the aim of modernizing the religious education system besides stoking the spirit of freedom among his students and the society around him. The objective of this study is to highlight the contributions of Ustaz Abu Bakar al-Baqir as a religious leader as well as a freedom fighter who opposed British rule in Perak from around 1934 until 1957. This is a historiographical research which uses qualitative methodology with a content analysis approach. Two different sources of information are used for this study namely primary and secondary sources. Primary sources include documents and files from the Malaysian National Archives and official documents from the British Colonial office, besides interviewing family members as well as former students of Ustaz Abu Bakar al-Baqir. On the other hand, secondary sources include books, newspapers and seminar report relating to his struggle. The findings of the study show that his students were exposed to the struggle for Independence through the direct influence of the reformist teachers from Indonesia who were teaching at the Maahad al-Ehya Assyariff. These teachers had already been involved in the fight against the Dutch colonialists in Indonesia. In addition to this, the close relationship of Ustaz Abu Bakar al-Baqir with Ibrahim Yaakub, the primemover of Kesatuan Melayu Muda (KMM) and Dr. Burhanuddin al-Helmy, the leader of Parti Kebangsaan Melayu Muda (PKMM), projected Maahadal-Ehya Assyariff as the political front that opposed British rule until the founding of the Parti Hizbul Muslimin under the leadership of Ustaz Abu Bakar al-Baqir. Keywords: Maahad al-Ehya Assyariff, Hizbul Muslimin, British, Kaum Muda, Malay Nationalist Party (MNP), Young Malays Union.

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