scholarly journals Are root parasitic plants like any other plant pathogens?

2020 ◽  
Vol 226 (3) ◽  
pp. 641-643 ◽  
Author(s):  
Philippe Delavault
Keyword(s):  
Plant Pathogens ◽  
Parasitic Plants ◽  
Root Parasitic Plants

Reactions of Lotus japonicus ecotypes and mutants to root parasitic plants

2009 ◽  
Vol 166 (4) ◽  
pp. 353-362 ◽  
Author(s):  
Mie Kubo ◽  
Hiroaki Ueda ◽  
Pyoyun Park ◽  
Masayoshi Kawaguchi ◽  
Yukihiro Sugimoto
Keyword(s):  
Lotus Japonicus ◽  
Parasitic Plants ◽  
Root Parasitic Plants

scholarly journals SEED GERMINATION AND PLANT DEVELOPMENT IN Escobedia grandiflora (OROBANCHACEAE): EVIDENCE OF OBLIGATE HEMIPARASITISM?

2015 ◽  
Vol 20 (3) ◽  
pp. 133-140 ◽  
Author(s):  
Edison CARDONA-MEDINA ◽  
Sandra Bibiana MURIEL RUIZ
Keyword(s):  
Dry Matter ◽  
Parasitic Plants ◽  
Paspalum Notatum ◽  
Percentage Germination ◽  
Critical Stage ◽  
Stage Of Development ◽  
Medicinal Use ◽  
Germination Speed ◽  
Total Plant ◽  
Root Parasitic Plants

<p>Root parasitic plants can be facultative or obligate. Facultative parasites are able to complete their life cycle and their seeds can germinate without a host. <em>Escobedia</em> <em>grandiflora</em> is a poorly studied species in spite of its ancestral importance as dye of foods and medicinal use. The present study evaluates the states of seed, seedlings and mature plants, under presence and absence of possible hosts, for inferring the type of parasitism exhibited by <em>E. grandiflora</em>. Seeds were evaluated using two conditions each of light (12 and 0 hours) and temperature (20 ºC and 25 ºC); percentage germination, and germination speed were determined. The seeds did not require a host to germinate, as is typical of facultative parasitic plants.  Percentage of germination varied between 66 % and 85.3 % and was not affected by light or temperature although germination speed was greater at 25 ºC. Larger seeds had a higher percentage of germination and produced larger seedlings. The seedlings planted without a host did not survive, while those planted with <em>Paspalum notatum</em> had a 45 % survival rate, demonstrating that this is a critical stage of development, even with a host. <em>Escobedia grandiflora</em> plants sowed with grasses began the reproductive stage at the 28<sup>th </sup>week, and those planted with <em>Pennisetum</em> <em>purpureum</em> showed better performance, expressed in more haustoria, higher dry matter of total plant, rhizome and aerial stems. Plants sowed alone lived for more than six months, but they did not produce flowers or fruits. According to the behavior of seedlings and plants, <em>E. grandiflora</em> is an obligate parasite. </p><p><strong>Germinación de semillas y desarrollo de plantas en <em>Escobedia</em> <em>grandiflora</em> (Orobanchaceae): ¿Evidencia de hemiparasitismo obligado?</strong></p><p> </p><p>Las plantas parásitas de raíces pueden ser facultativas u obligadas, las primeras pueden completar su ciclo de vida y sus semillas pueden germinar sin un hospedero. <em>Escobedia</em> <em>grandiflora</em> es una especie poco estudiada, a pesar de su importancia ancestral como colorante de alimentos y uso medicinal. Este estudio evaluó los estados de semilla, plántula y planta adulta, en presencia y ausencia de posibles hospederos para inferir sobre su tipo de parasitismo. En las semillas se evaluaron dos condiciones de luz (12 y 0 horas) y temperatura (20 ºC y 25 ºC), el porcentaje y velocidad de germinación. Las semillas no requirieron la presencia del hospedero para germinar. El porcentaje de germinación osciló entre 66 y 85,3 %  y no fue afectado por la luz o la temperatura, aunque la velocidad de germinación fue mayor a 25 ºC. Las semillas con mayor tamaño presentaron mayor porcentaje de germinación y produjeron plántulas más grandes. Las plántulas sembradas sin hospedero no sobrevivieron, mientras que las sembradas con <em>Paspalum notatum</em>, tuvieron una sobrevivencia del 45 %, evidenciando que este estado es crítico, aún con hospedero. Las plantas de <em>Escobedia grandiflora</em> sembradas con pastos, iniciaron la etapa reproductiva en la semana 28, y aquellas sembradas con <em>Pennisetum</em> <em>purpureum</em> presentaron más haustorios, y mayor materia seca en la planta total, rizoma y tallos aéreos. Las plantas sembradas solas vivieron más de seis meses, pero ellos no desarrollaron flores y ni frutos. Según el comportamiento de las plántulas y las plantas, <em>E. grandiflora</em> es parásita obligada.</p>

Avenaol, a germination stimulant for root parasitic plants from Avena strigosa

2014 ◽  
Vol 103 ◽  
pp. 85-88 ◽  
Author(s):  
Hyun Il Kim ◽  
Takaya Kisugi ◽  
Pichit Khetkam ◽  
Xiaonan Xie ◽  
Kaori Yoneyama ◽  
...  
Keyword(s):  
Parasitic Plants ◽  
Germination Stimulant ◽  
Avena Strigosa ◽  
Root Parasitic Plants

Sorgomol, germination stimulant for root parasitic plants, produced by Sorghum bicolor

2008 ◽  
Vol 49 (13) ◽  
pp. 2066-2068 ◽  
Author(s):  
Xiaonan Xie ◽  
Kaori Yoneyama ◽  
Dai Kusumoto ◽  
Yoichi Yamada ◽  
Yasutomo Takeuchi ◽  
...  
Keyword(s):  
Sorghum Bicolor ◽  
Parasitic Plants ◽  
Germination Stimulant ◽  
Root Parasitic Plants

ChemInform Abstract: Sorgomol, Germination Stimulant for Root Parasitic Plants, Produced by Sorghum bicolor.

ChemInform ◽  
2008 ◽  
Vol 39 (28) ◽  
Author(s):  
Xiaonan Xie ◽  
Kaori Yoneyama ◽  
Dai Kusumoto ◽  
Yoichi Yamada ◽  
Yasutomo Takeuchi ◽  
...  
Keyword(s):  
Sorghum Bicolor ◽  
Parasitic Plants ◽  
Germination Stimulant ◽  
Root Parasitic Plants
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