Difference Between Perisperm and Endosperm

Full text

5/6/2017 DifferenceBetweenPerispermandEndosperm|Definition,Characteristics,Role
http://pediaa.com/differencebetweenperispermandendosperm/ 1/9
Home»Science»Biology»Botany»DifferenceBetweenPerispermandEndosperm
DifferenceBetweenPerispermandEndosperm
May5,2017 •byLakna •5minread
0
MainDifference–Perispermvs
Endosperm
Perispermandendospermaretwotypesoffoodstoragetissues
foundin the seed ofhigher plants. Most seedscontain stored
foodintheformofcarbohydrates,fat,andprotein.Thestored
food is used for the growth of the embryo during the
germinationoftheseed.Endospermisusuallydigestedduring
thedevelopmentoftheseedintheeventcalledseedling.The
main difference between perisperm and endosperm is that
perisperm is the diploid food storage tissue, which
originatesfromthenucelluswhereasendospermisthetriploidfoodstoragetissue,whichoriginatesfromtriple
fusion.
1.WhatisPerisperm
–Definition,Characteristics,Role
2.WhatisEndosperm
–Definition,Characteristics,Role
3.WhatisthedifferencebetweenPerispermandEndosperm

EXPLORE
Typeheretosearch...


5/6/2017 DifferenceBetweenPerispermandEndosperm|Definition,Characteristics,Role
http://pediaa.com/differencebetweenperispermandendosperm/ 2/9
WhatisPerisperm
Perispermisoneofthefoodstoringtissuesoftheseed.Itoriginatesfromthenucellus,whichisthecentralpartofthe
ovuleintheembryosac.Theendospermconsumesthenucellusduringitsdevelopment.Perispermisfoundonlyin
severalfamilieslikeChenopodiaceae,Cannaceae,Caryopyllaceae,Amaranathaceae,Capparidaceae,Portulacaceae,
PiperaceaeandZingiberaceae.Inthesefamilies,persistingembryosacbecomesdenselypackedfoodmaterialinside

5/6/2017 DifferenceBetweenPerispermandEndosperm|Definition,Characteristics,Role
http://pediaa.com/differencebetweenperispermandendosperm/ 3/9
theseed. Endosperm is found between the perispermand embryo. Hence, endosperm in the seed absorbs nutrients
fromperisperm,transformingitintotheembryo.
In Piperaceae, some nucellar cells rapidly increase their number following the fertilization, compared to the other
nucellar cells. These cells fuse with each other, forming composite cells. These composite cells contain a dense
cytoplasm,whichstores oil globules. The epidermal nucellarcellsstore starch. A gradient of storedstarchis found
from the chalazal end to the base of the embryo sac. The 95% of the seed of Piperaceae is perisperm. Thus, its
endospermisfoundhighlyreduced.Theovuleofangiospermcontainingthenucellusisshowninfigure1.
Figure1:Nucellusintheangiospermovule
WhatisEndosperm
The endosperm is the most prominent food storing tissue of the seed. It is formed from the primary endosperm
nucleus.Thefusion of one ofthetwospermcellscomingthrough the pollen tubeintheprocesscalledtriplefusion
producestheprimaryendospermnucleusinsidetheembryosac.Duringtriplefusion,threehaploidnucleiarefused
together,formingthetriploidnucleus.Therepeatedcelldivisionbymitosisformstheendosperm,whichiscapableof
storingfoodforthedevelopmentoftheembryo. Typically,theendospermisconsideredaspolyploid, which can be
variedfrom2nto15n.

5/6/2017 DifferenceBetweenPerispermandEndosperm|Definition,Characteristics,Role
http://pediaa.com/differencebetweenperispermandendosperm/ 4/9
Starchismostlyfoundin theendosperm.Oils andproteins
arefoundintheendospermaswell.Endospermicseedsand
nonendospermic seeds are the two types of seeds, which
are classified depending on the presence or absence of
endosperm inside the seed. Dicots are considered as non
endospermic seeds since nutrients in their endosperm are
absorbedby thetwocotyledonsduring the developmentof
theembryobeforeseedling.Hence,averysmallendosperm
isfoundinseedsofdicots.Therefore, theseedofthedicot
isalsocalledexalbuminous.Monocotsaretheendospermic
seeds, containing a prominent endosperm inside the seed.
Therefore, the seeds of monocots are also called
albuminous seeds. Monocots contain the largest seeds
comparedtodicots.Cerealcropsaremonocots.Endospermofthecerealcropslikewheatandbarleycanbeutilizedas
asourceoffoodinthehumandietaswell.Theinternalstructureofthedicotseedisshowninfigure2.
Figure3:Magnoliopsidaseed
a–seedcoat,b–endosperm,c–cotyledons,d–embryo

5/6/2017 DifferenceBetweenPerispermandEndosperm|Definition,Characteristics,Role
http://pediaa.com/differencebetweenperispermandendosperm/ 5/9
DifferenceBetweenPerispermandEndosperm
Origins
Perisperm:Perispermoriginatesfromthenucellus.
Endosperm:Endospermoriginatesfromtheprimaryendospermnucleus.
MaternalPortion
Perisperm:Perispermispurelymaternal.
Endosperm:The2/3oftheendospermismaternal.
Ploidy
Perisperm:Perispermcontainsdiploidcells.
Endosperm:Endospermcontainstriploidcells.
InsidetheSeed
Perisperm:Perispermisfoundsurroundingtheendosperm.
Endosperm:Endospermisfoundsurroundingtheembryo.
AbsorptionofNutrition
Perisperm:Thenutritionoftheperispermisabsorbedbytheendosperm.
Endosperm:Thenutritionintheendospermisabsorbedbytheembryo.
Dry/Soft
Perisperm:Perispermisusuallydry.
Endosperm:Endospermisusuallysoft.
Foundin
Perisperm: Perisperm is found only in several families like Chenopodiaceae, Cannaceae, Caryophyllaceae,
Amaranthaceae,Capparidaceae,Portulacaceae,Piperaceae,andZingiberaceae.
Endosperm:Endospermisfoundinmostoftheseeds.

5/6/2017 DifferenceBetweenPerispermandEndosperm|Definition,Characteristics,Role
http://pediaa.com/differencebetweenperispermandendosperm/ 6/9
Examples
Perisperm:Sugarbeet,coffee,andblackpepperaretheexamplesofperispermicseeds.
Endosperm:Onion,castorbean,groundnut,tomatoandcerealgrainsareexamplesoftheendospermicseeds.
Conclusion
Perispermandendospermarethetwotypesofnutritivetissuesfoundinseeds.Perispermbearsamaternaloriginsince
itisoriginatedfromthenucellusoftheembryosac.Henceitisdiploid.Perispermisonlyfoundinseveralfamiliesof
plants.Itisfoundsurroundingtheendosperm.Endospermisfoundsurroundingtheembryoinmostoftheseeds.Itis
prominent in monocot seeds. The nutrients in the endosperm of dicot seeds are absorbed by the cotyledons of the
embryo before seedling. Endosperm originates from the repeated mitotic cell division of the cell, containing the
primaryendospermnucleus.Theprimaryendospermnucleusisformedbythefusionoftwopolarnucleiwithoneof
thetwospermcellsintheeventcalledtriplefusion.Hence,theendospermistriploidinmostofthetimes.However,
themaindifferencebetweenperispermandendospermisintheformationofeach tissue during the development of
theseed.
Reference:
1.“PartsofaSeedandTheirFunctions.”CropsReview.Com.N.p.,n.d.Web.02May2017.
2.Leubner,Gerhard.TheSeedBiologyPlace–SeedStructureandAnatomy.N.p.,12Mar.2005.Web.02May2017.
ImageCourtesy:
1. “OvuleGymnoAngioen” By derivative work: Qef (talk)OvuleGymnoAngiofr.svg: Original uploader was
Tameeria at en.wikipedia. Translation and vectorisation by Cehagenmerak. – OvuleGymnoAngiofr.svg (Public
Domain)viaCommonsWikimedia
2. “Budowa nasieniadwuliscienne” By Agnieszka Kwiecień ( Nova) – Own work (CC BY 2.5) via Commons
Wikimedia
0

5/6/2017 DifferenceBetweenPerispermandEndosperm|Definition,Characteristics,Role
http://pediaa.com/differencebetweenperispermandendosperm/ 7/9
Viewallposts
AbouttheAuthor:Lakna
Lakna,agraduateinMolecularBiology&Biochemistry,isaMolecularBiologistandhasa
broadandkeeninterestinthediscoveryofnaturerelatedthings
YouMayAlsoLikeThese
Vintage Nature
Books.
Ad
alembicrarebooks.com
Di፬erence Between
Flora and Fauna
pediaa.com
Instant smartness
Ad
Mobile Academy
Di፬erence Between
Nor and Or |...
pediaa.com
Gardening Tips &
Supplies
Ad
gardeningenthusiast.com
Di፬erence Between
Prophase 1 and 2 |...
pediaa.com
Di፬erence Between
Nucleus and...
pediaa.com
Di፬erence Between
Stem Cells and...
pediaa.com
LeaveaComment

5/6/2017 DifferenceBetweenPerispermandEndosperm|Definition,Characteristics,Role
http://pediaa.com/differencebetweenperispermandendosperm/ 8/9
YouMayLike
DifferenceBetween
Perispermand
Endosperm
DifferenceBetween
Cotyledonand
Endosperm
DifferenceBetween
PlumuleandRadicle
DifferenceBetween
MonocotandDicot
DifferenceBetween
Autogamy
Geitonogamyand
Xenogamy
Comment
Name* Email* Website
PostComment

5/6/2017 DifferenceBetweenPerispermandEndosperm|Definition,Characteristics,Role
http://pediaa.com/differencebetweenperispermandendosperm/ 9/9
Copyright©2017Pediaa.Com.Contact Abo utUs