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する による っていて, する ある. これを に,アスコル に対する について した.そして,アスコル ,多 に対して するこ 1) ,そ にフリーラジカル しているこ した 2) .アスコル について がある 3) The in vitro effect of iron(II) on bacteria was investigated using nine bacterial species. Iron(II) was bactericidal toward all species examined. The bacteria were sensitive to iron(II) in this order from great- est to least: Lactobacillus casei, Bacillus subtilis, Salmonella typhimurium, Escherichia coli, Serratia marcescens, Staphylococcus aureus, Proteus vulgaris, Micrococcus flavus and Morganella morganii. Mechanism of the bactericidal action of iron(II) was investigated with E. coli and M. morganii. Bubbling nitrogen gas through the reaction mixture inhibited the action. Addition to the reaction mixture of reducing agents, chelating agents and radical scavengers inhibited the action. The findings indicate that free radical mechanism is involved in the action and reactive oxygen species are responsible for the action. Iron(II) had no effect on bovine serum albumin. It nicked supercoiled form of pUC18 DNA, giving first single-stranded breaks and then double-stranded breaks. The breaks could account for the bacteri- cidal action. In iron(II)-treated bacterial cells, adsorption of T-phages were inhibited, indicating the al- teration of bacterial cell surface by iron(II). Key words: iron(II), bactericidal action, oxygen radical, Escherichia coli , Morganella morganii , Bactericidal Action of Iron(II) and Mechanism of the Action Summary Akira MURATA, Toshikatsu HIDAKA, Kohzo KANDA and Fumio KATO (Laboratory of Applied Microbiology) Received November 30, 2007 ** 191130 大学 (〒840‐0806 園3-18-15) ** :アサヒ ール! (〒812‐0895 3-1) Bull. Fac. Agr., Saga Univ.)93:141~155(2008)

Sources of Native Plants Native plantsWhat is a native plant? native plant is one that originated and occurs naturally in a region. Non-native plants also may occur naturally, but

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Page 1: Sources of Native Plants Native plantsWhat is a native plant? native plant is one that originated and occurs naturally in a region. Non-native plants also may occur naturally, but

Native plants FOR D E L A W A R E L A N D S C A P E S

UNIVERSITY OF DELAWAREBOTANIC GARDENS

COLLEGE OF AGRICULTURE AND NATURAL RESOURCES

Sources of Native PlantsThe following nurseries grow native plants as aportion of their inventory. Most local nurseriesinventory a few native plants. This list includes mail-order (M), retail (R) and wholesale (W) sources.

Forestfarm (M)990 Tetherow RoadWilliams, OR 97544(503) 846-6963

London Grove Nurseries (W)P.O. Box 663Avondale, PA 19311(610) 268-2091

Natural Landscapes (R,W) 354 N. Jennersville RoadWest Grove, PA 19390(610) 869-3788

Simpson Nurseries (W)1504 Wheatland Rd.P.O. Box 2065Vincennes, IN 47591(812) 882-2441

Sylva Native Nursery & Seed Co. (R,W)1927 York RoadTimonium, MD 21093(301) 560-2288

Transplant Nursery (R)Parkertown RoadLavonia, GA 30553(404) 356-8947

Woodlanders, Inc. (M)1128 Colleton AvenueAiken, SC 29801(803) 648-7522

The University of Delaware is committed to assuring equal opportunity to all personsand does not discriminate on the basis of race, color, gender, religion, ancestry,national origin, sexual orientation, veteran status, age, or disability in its educationalprograms, activities, admissions, or employment practices as required by Title IX ofthe Education Amendments of 1972, Title VI of the Civil Rights Act of 1964, theRehabilitation Act of 1973, the Americans with Disabilities Act, other applicablestatutes and University policy. Inquiries concerning these statutes and informationregarding campus accessibility should be referred to the Affirmative Action Officer,305 Hullihen Hall, (302) 831-2835 (voice), (302) 831-4563 (TDD).

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Page 2: Sources of Native Plants Native plantsWhat is a native plant? native plant is one that originated and occurs naturally in a region. Non-native plants also may occur naturally, but

What is a native plant?native plant is one that originated

and occurs naturally in a region. Non-native plants also may occur naturally,but were introduced from anotherregion. They survive withoutintervention and compete successfullywith native plants. Native and non-native plants often occur side by side innatural stands. Only historical recordscan trace true origin.

Why landscape with native plants?ince native plants are indigenous in

an area, they are ideally suited to growin a similar habitat within the region.Having competed with other plants,native plants have proven themselveswell adapted. Plants used in alandscape environment that is similarto their native habitat will grow with aminimum of maintenance. Whenappropriately placed in the landscape,native plants require less water andfewer pesticide applications. If nativeplants require pampering, the mostlikely reason is an unsuitable location.

Planting native species protects themfrom extinction. As land is developed,some native plants are pushed out oftheir natural habitats. The sensitive useof these plants in the landscapepreserves them for all to appreciate.

The University of Delaware Botanic Gardens(UDBG) is located on the the University ofDelaware campus in Newark, Delaware, 1.5 milesnorth of Interstate 95. The UDBG occupiesapproximately 10 acres that surround theagriculture buildings and is situated on the divisionof USDA hardiness zones 6b and 7a. The gardensare open year-round and visitors are welcome. Formore information, call (302) 831-2531.

The UDBG contains a broad array of plant material.Emphasis is placed on plants that have merit forlandscape use. This includes plants currentlyavailable, new cultivars and plants that potentiallycould be used in the landscape. The gardenemphasizes the following groups of plants: plantsin the Hamamel idaceae, Acer, magnolia, Styrax,Viburnum and Ilex. The UDBG is an officialarboretum of the American Holly Society ofAmerica.

Mission StatementThe mission of the UDBG is to promote generalinterest in plants and demonstrate environmentallysound ways of using them aesthetically in thelandscape.

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COLLEGE OF AGRICULTURE AND NATURAL RESOURCES

UDBOTANICGARDENS

Page 3: Sources of Native Plants Native plantsWhat is a native plant? native plant is one that originated and occurs naturally in a region. Non-native plants also may occur naturally, but

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N A M E F A L L C O L O R M A J O R F E A T U R E

20 - 40' TallPersimmon Diospyros virginiana Yellow FruitHophornbeam Ostrya virginiana Golden BarkIronwood Carpinus caroliniana Golden BarkSassafras Sassafras albidum *Orange/red Fall color

40 - 60’ TallRed Maple Acer rubrum *Red/orange Fall colorSweet Birch Betula lenta Yellow BarkRiver Birch Betula nigra Golden BarkScarlet Oak Quercus coccinea *Red Fall colorPin Oak Quercus palustris *Red/bronze Shade treeWillow Oak Quercus phellos Golden brown Shade treeRed Oak Quercus rubra Red brown Shade treeSweetgum Liquidambar styraciflua *Red/orange Fall colorBitternut Carya cordiformis Golden WildlifePignut Carya glabra Golden WildlifeYellowwood Cladrastis kentukea Yellow FlowersHoneylocust Gleditsia triacanthos Yellow Light shadeKentucky Coffeetree Gymnocladus dioicus Light shadeBlack Locust Robinia pseudoacacia FlowersWhite Ash Fraxinus americana *Maroon/purple Fall colorGreen Ash Fraxinus pennsylvanica Yellow Wet soilBald Cypress Taxodium distichum Golden brown Wet soil

Greater than 60’Tuliptree Liriodendron tulipifera Golden FlowersSycamore Platanus occidentalis BarkBasswood Tilia americana Yellow Shade treeBur Oak Quercus macrocarpa Shade treeWhite Oak Quercus alba Purple/maroon Shade treeSugar Maple Acer saccharum *Yellow/orange Fall colorAmerican Beech Fagus grandifolia Golden Bark

■ EVERGREEN TREES

N A M E F A L L C O L O R M A J O R F E A T U R E

20-40’ TallVirginia Pine Pinus virginiana Poor soilEastern Redcedar Juniperus virginiana Blue/gray Poor soilEastern Arborvitae Thuja occidentalis Moist soilAmerican Holly Ilex opaca *Red Fruit

40-60’ TallCanadian Hemlock Tsuga canadensis Shade tolerantAtlantic Whitecedar Chamaecyparis thyoides Wet soilSouthern Magnolia Magnolia grandiflora Red

Greater than 60’White Pine Pinus strobus Form

* particularly showy All of these plants are included in the UDBG Collections.

Page 4: Sources of Native Plants Native plantsWhat is a native plant? native plant is one that originated and occurs naturally in a region. Non-native plants also may occur naturally, but

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N A M E F A L L C O L O R F R U I T C O L O R

Less than 10’Bottlebrush Buckeye Aesculus parviflora *WhiteChokecherry Aronia arbutifolia *White *RedBeautyberry Callicarpa americana Purple *PurplePinxterbloom Azalea Rhododendron periclymenoides PinkCoast Azalea Rhododendron atlanticum WhiteSweetshrub Calycanthus floridus RedCinnamon Clethra Clethra acuminata *WhiteSummersweet Clethra Clethra alnifolia *WhiteRedtwig Dogwood Cornus sericea White WhiteOakleaf Hydrangea Hydrangea quercifolia *WhiteVirginia Sweetspire Itea virginica *WhiteBayberry Myrica pensylvanica *GrayMapleleaf Viburnum Viburnum acerifolium *White BlackArrowwood Viburnum Viburnum dentatum *White BlackSmooth Witherod Viburnum nudum *White Red

10 - 20’Red Buckeye Aesculus pavia *RedShadblow Amelanchier canadensis *White PurpleRedbud Cercis canadensis *PinkFringetree Chionanthus virginicus *White PurpleSilky Dogwood Cornus amomum *White BlueStrawberry-bush Euonymus americanus RedWitchhazel Hamamelis virginiana *YellowWinterberry Ilex verticillata *RedSpicebush Lindera benzoin Yellow *RedSilky Stewartia Stewartia malachodendron *WhitePiedmont Azalea Rhododendron canescens PinkNannyberry Viburnum Viburnum lentago *White BlackBlackhaw Viburnum Viburnum prunifolium *White Pink/Black

20 - 30’Downy Serviceberry Amelanchier arborea *White PurplePagoda Dogwood Cornus alternifolia *White PurpleFlowering Dogwood Cornus florida *White RedFranklin Tree Franklinia alatamaha *WhiteSilverbells Halesia tetraptera *WhiteBigleaf Magnolia Magnolia macrophylla White RedUmbrella Magnolia Magnolia tripetala White RedSweetbay Magnolia virginiana *White RedAmerican Snowbell Styrax americanus *White

■ EVERGREEN SHRUBS

N A M E F A L L C O L O R F R U I T C O L O R

Less than 10’Inkberry Ilex glabra BlackCreeping Juniper Juniperus horizontalisMountain Laurel Kalmia latifolia *White/pinkDrooping Leucothoe Leucothoe fontanesiana WhitePiedmont Rhododendron Rhododendron minus *PinkMountain Pieris Pieris floribunda White

* particularly showy All of these plants are included in the UDBG Collections.