Results 71 to 80 of about 1,391 (169)

Oak leaf galls: Neuroterus numismalis and Cynips quercusfolii, their structure and ultrastructure

open access: yesActa Societatis Botanicorum Poloniae, 2017
Anatomy and surface ultrastructure of the galls induced on oak leaves by the insects – Neuroterus numismalis (Ol.) and Cynips (Diplolepis) quercusfolii L. – were investigated using a scanning electron microscope (SEM) and a light microscope (LM).
Leszek Stanisław Jankiewicz   +3 more
doaj   +1 more source

Bark structure is coordinated with xylem hydraulic properties in branches of five Cupressaceae species

open access: yesPlant, Cell &Environment, Volume 47, Issue 5, Page 1439-1451, May 2024.
Abstract The properties of bark and xylem contribute to tree growth and survival under drought and other types of stress conditions. However, little is known about the functional coordination of the xylem and bark despite the influence of selection on both structures in response to drought.
Radek Jupa   +2 more
wiley   +1 more source

A detailed anatomical approach to taxonomically problematic endemic Seseli L. (Apiaceae) taxa in Türkiye

open access: yesMicroscopy Research and Technique, Volume 87, Issue 4, Page 800-807, April 2024.
Vegetative anatomical characters help to illuminate the taxonomy in endemic thrSeseli taxa from Apiaceae family in Türkiye. In this way, the similarities in the studied taxa support the latest molecular studies. Abstract In this study, the vegetative anatomical features of the taxa, which were previously named as Seseli gummiferum subsp.
Dudu Özlem Mavi İdman
wiley   +1 more source

Lignin composition and structure differs between xylem, phloem and phellem in Quercus suber L.

open access: yesFrontiers in Plant Science, 2016
The composition and structure of lignin in different tissues - phellem (cork), phloem and xylem (wood) - of Quercus suber was studied. Whole cell walls and their respective isolated milled lignins were analyzed by pyrolysis coupled with gas ...
Ana Lourenço   +6 more
doaj   +1 more source

Climate effects on cork growth in Cork oak plantations in Sicily (Italy)

open access: yesForest@, 2009
Cork oak (Quercus suber L.) is usually dominant in silvopastoral systems in many areas of Sicily, where the trees are debarked periodically for cork production.
doaj   +1 more source

Secondary Aerenchyma Formation and its Relation to Nitrogen Fixation in Root Nodules of Soybean Plants (Glycine max) Grown under Flooded Conditions

open access: yesPlant Production Science, 2002
Soybean (Glycine max (L.) Merr.) is considered to be susceptible to flooding, a major agronomic problem in the world, and nitrogenase activity rapidly declines due to oxygen deficiency in root nodules.
Satoshi Shimamura   +3 more
doaj   +1 more source

STRUCTURAL DAMAGE AND GALL INDUCTION BY PEGOMYA CURTICORNIS AND PEGOMYA EUPHORBIAE (DIPTERA: ANTHOMYIIDAE) WITHIN THE STEMS OF LEAFY SPURGE (EUPHORBIA × PSEUDOVIRGATA) (EUPHORBIACEAE) [PDF]

open access: yes, 2017
Leafy spurge (Euphorbia × pseudovirgata [Schur]) is an herbaceous perennial and serious weed of European origin that has been accidently introduced into North America.
Gassmann, Andre, Shorthouse, Joseph D.
core  

Caracteres morfoanatómicos funcionales en especies xerofíticas de ambientes salinos [PDF]

open access: yes, 2014
La comunidad halófila del Salitral de la Vidriera (Prov. Buenos Aires, Argentina) posee especies con diferentes caracteres morfoanatómicos funcionales; el objetivo de este estudio fue comparar este tipo de caracteres en cuatro especies, dos Asteraceae ...
Cambi, V., Pérez Cuadra, Vanesa
core   +1 more source

Rhizophores in Rhizophora mangle L: an alternative interpretation of so-called ''aerial roots''

open access: yesAnais da Academia Brasileira de Ciências, 2006
Rhizophora mangle L., one of the most common mangrove species, has an aerial structure system that gives it stability in permanently swampy soils. In fact, these structures, known as "aerial roots" or "stilt roots", have proven to be peculiar branches ...
Menezes Nanuza L. de
doaj  

The AtLa1 protein initiates IRES-dependent translation of WUSCHEL mRNA and regulates the stem cell homeostasis of Arabidopsis in response to environmental hazards [PDF]

open access: yes, 2015
在拟南芥茎尖分生组织中,位于组织中心处表达的同源异型结构域转录因子WUSCHEL(WUS)蛋白决定并维持其上方中央区域处干细胞的命运和数量。茎尖干细胞分裂后产生的子细胞后裔移向外围区域并成为整个地上部分器官发育的源泉。为保证子细胞后裔遗传信息的稳定性,在植物的生命周期中干细胞对于外界环境胁迫表现的超级敏感,但一直以来对于环境胁迫时干细胞动态平衡的调控机制并不清楚。 La蛋白作为一种RNA结合蛋白广泛存在于各种真核生物中,大量的研究表明它参与多种RNA的加工和代谢 ...
崔玉超
core  

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