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Division Rhodophyta, red algae

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Page 1: Division Rhodophyta

Division RhodophytaDivision Rhodophytaอ.ดร. เนติ เงินแพทย

School of Medical Science, University of Phayao

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Page 2: Division Rhodophyta

Division Rhodophyta-สวนใหญอยูในทะเล พบ 2-3 จีนัส (150 สปชีส)ในนํ้าจืด

-พบประมาณ 5000-5500 spp. (500-600 จีนัส) ถือวามีสมาชิกมากท่ีสุดในสาหรายทะเล

-ไมพบ free floating form

-มีรงควัตถุ phycocyanin, phycoerythrin เปนหลัก มีการสืบพันธแบบไมอาสัยเพศ เซลลสืบพันธไมมีแฟลกเจลลาเคลื่อนท่ีไมได

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Page 3: Division Rhodophyta

1.11.1 ลักษณะของทัลลัสลักษณะของทัลลัส- ทัลลัสสวนใหญจะเปนเสนสายท่ีแตกแขนง

จํานวนมาก ขนาดไมใหญนักแตสาหรายบางชนิดในเขตอบอุนอาจมีความยาวถึง 1-2 เมตร

1.ลักษณะทั่วไป1.ลักษณะทั่วไปSchool of Medical Science, University of Phayao

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Page 4: Division Rhodophyta

- การแตกแขนงของทัลลัสอาจแตกจาก main axis

uniaxial multiaxial

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Page 5: Division Rhodophyta

- ทัลลัสเปนแผนแบนยาว แบบ พาเรนไคมา

Porphyra sp.

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Page 6: Division Rhodophyta

1.21.2 PigmentPigmentChlorophyll a, dβ-carotene, α -caroteneXanthophyllPhycobilin R - phycoerythrin

R - phycocyanin

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Page 7: Division Rhodophyta

1.3 สวนประกอบของเซลล1.3.1 ผนังเซลล- inner cell wall เปน cellulose

- outer cell wall เปน pectic substance มีสารเมือกพวกวุน sulfated galactan, cerrageenin, porphyran และ furcelleran - บางชนิดไมมีเซลลูโลสแตเปนสารพวก แมนแนนแทนทําให มีลักษณะนุมไมกระดาง เชน Porphyra

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Page 8: Division Rhodophyta

Nucleus

Central stallate chromatophore

pyrenoid

1.3.2 Cytoplasm

Phycobilisome

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Page 9: Division Rhodophyta

- reserved food Floridean starch

Soluble sugarคลายน้ําตาลซูโครสในพืชชั้นสูง กระจายอยุทั่วไซโตพลาสซึม

1.6 การอยูรวมกันกับสาหรายอ่ืนóมักเปน epiphyte แตบางคร้ังจะพบวาคลายพาราไซท เชน

Polysiphonia จะชอนไชโฮลฟาสตบน ที่เจริญอยุบนAscophyllum

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Page 10: Division Rhodophyta

1.4 Pit connectionเปนรอยตอในแตละเซลลซ่ึงมีสาร บางอยางมาอุด (plug)ซ่ึงทําใหเซลลแตละเซลลไมติดตอถึงกันพบไดในสาหรายสีแดงทุกชนิดยกเวน order phophyridiales

Pit connection ชวยเพิ่มความแข็งแรงใหเซลลสาหรายสีแดง

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Page 11: Division Rhodophyta

1.5 Calcification

เปนกลุมที่มีการสะสมหินปูน จะมีการสะสมสองแบบคือแคลไซท (calcite) โดยผลึกจะเปนกอน แบบ rhombohedral พบใน order corallinalesอะราโกไนต (arogonite) ผลึกแบบ orthorhombic พบใน order Nemalliales

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Page 12: Division Rhodophyta

1.7 การสืบพันธุ Asexual Reproduction

1.7.1.1 monospore เกิดจากเซลลปกติ (diploid sporophyte)สราง monosporangium monospore

1.7.1.2 bispore bisporangium สราง bispore1.7.1.3 tetraspore cruciate, cruciate decussate,tetrahedral,zonate1.7.1.4 polyspore

สปอรที่สรางไมมีแฟลกเจลลัม

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Page 13: Division Rhodophyta

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1.7.2 Sexual reproductionMale gametes สรางจาก spermatium

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Polysiphonia’s antheridium

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Female gametes สรางจาก carpogonium

Polysiphonia’s Trichogyne

ประกอบดวยเซลล สามสี่เซลลเรียงกันเซลลไขจะอยุปลายสุดมีสวนท่ียืดยาวออกไป เรียก ตรับโคจีน (Trichogyne)

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Nemalion’s carpogonium

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Page 20: Division Rhodophyta

Male gamete + Female gamete

zygote

carpospore

การสราง gonimoblast และ carposporeSchool of Medical Science, University of Phayao

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Page 21: Division Rhodophyta

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Page 22: Division Rhodophyta

Polysiphonia’s cystocarp

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Page 24: Division Rhodophyta

1.8.1 Biphasis แบบท่ี 1 แบบสลับGAMETOPHYTE PLANT (n)

carpogonium (n)

antheridium (n)+Carpospore (n)

Haploid gametophyte phase------------------------------------------------------Haploid carposporophyte phase

Zygote (2n)

Gonimoblast filament (n)

carposporangium (n)

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Page 25: Division Rhodophyta

1.8.2 Biphasis แบบท่ี 2 สลับ n/2n

GAMETOPHYTE PLANT (n)

carpogonium (n)

antheridium (n)+Carpospore (n)

Haploid gametophyte phase---------------------------------------Diploid carposporophyte phase

Zygote (2n)

Gonimoblast filament (2n)

Carposporangium (2n)

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Page 26: Division Rhodophyta

1.8.3 TriphasisGAMETOPHYTE PLANT (n)

carpogonium (n)

antheridium (n)+tetraspore (n)

Haploid gametophyte phase---------------------------------------------------------------------------Diploid carposporophyte phaseZygote (2n)

Gonimoblast filament (2n)

Carposporangium (2n)

Diploid Tetrasporophyte phase

Carpospore (2n)

Tetrasporophyte plant (2n)

Tetrasporangium (2n)

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Page 27: Division Rhodophyta

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Page 28: Division Rhodophyta

Class Rhodophyceae

Sub class 1 Bangiodeae(Bangiophycidae) 4 orders

Sub class 2 Florideae(Florideophycidae) 6 orders

ClassificationClassificationSchool of Medical Science, University of Phayao

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Page 29: Division Rhodophyta

Sub class Bangiophycidae

- branched / unbranched filament หรือ เปนแผนแบนบาง

- บางชนิดเปน parenchymatous form

- ไมมี pit connection

- เซลลเดียว หรือ เสนสาย

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Page 30: Division Rhodophyta

ReproductionReproductionAsexual reproduction

1. สราง monosporangium monospore2. สราง neutral spore

Naked amoeboid spore Neutral spore

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Page 31: Division Rhodophyta

Order 1 Porphyridiales

Family PorphyridiaceaePorphyridium เซลลเดี่ยวขนาดเล็ก

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Page 32: Division Rhodophyta

Order 2 GoniotricalesFamily GoniotricaceaeGoniotrichum

เสนสายแตกแขนง

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Page 33: Division Rhodophyta

Order 3 CompsopogonalesFamily CompsopogonaceaeCompsopogon เสนสายแตก

แขนง สีเขียวออกเทา

พบในนํ้าจืดคุณภาพไมดี

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Page 34: Division Rhodophyta

Order 4 BangialesFamily 1 Erythropeltidaceae

Erythrocladia

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Page 35: Division Rhodophyta

Family 2 Bangiaceaeต.ย. Porphyra spp. สาย, สายใบ, จีไฉ, Nori Porphyraเปนสาหรายท่ีมีความสําคัญทางเศรษฐกิจสูง มีช่ือสามัญวา “Laver” ช่ือภาษาไทยวา “สายใบ” ช่ือญี่ปุนคือ “โนร”ิ และช่ือจีนวา “จีไฉ” มีลักษณะเปนแผนแบนบางสีมวงเขมสวนใหญขอบมีรอยจีบยน ทัลลัสเจริญจากโฮลดฟาสต มีความหนาของทัลลัส 1-2 ช้ัน มีคลอโรพลาสตรูปดาว (stellate) สีชมพู มีเมือกเคลือบอยู

- รูปรางแบบ parenchymatous form

Disc shaped holdfast

rhizoid

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Page 36: Division Rhodophyta

เปน monoecious

Male reproductive cell อยูรอบนอกFemale reproductive cell อยูถัดเขามาสีเขมกวา

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Page 37: Division Rhodophyta

germinationmonospore

Spermatia(n)Carpogonia(n) zygote

(2n)

carposporangium

carpospore

Conchocelis phase

conchosporangium

germinationconchospore

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Conchocelis phase

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Porphyra sp.

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BangiaSchool of Medical Science, University of Phayao

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Page 42: Division Rhodophyta

Subclass 2 Florideae- Filamentous form

- มี pit connection

- มี chloroplast มากกวา 1 อัน- บาง order มีการสืบพันธุสลับระหวาง gametophyte plant กับ tetrasporophyte plant

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Page 43: Division Rhodophyta

- sex cell สรางบนแขนงพิเศษCarpogonium สรางบน carpogonial filament

Spermatium สรางบน spermatial filamentZygote งอกบน gonimoblast filament

Zygote มีการเปลี่ยนแปลงเปน 2 ทาง1. มีการแบงเซลลแบบ meiosis

2. ไมมีการแบงเซลลแบบ meiosis

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Page 44: Division Rhodophyta

Life cycleLife cycle

Nemalionแบบท่ี 1

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Polysiphonia sp.

แบบท่ี 2

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Page 47: Division Rhodophyta

Order 1 NemalionalesFamily 1 Acrochaetiaceae

Acrochaetium

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Page 48: Division Rhodophyta

Family 2 BatrachospermaceaeBatrachospermum sp.

เปนสาหรายนํ้าจืด

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Page 49: Division Rhodophyta

Lemanea

เปนสาหรายนํ้าจืด

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Family 3 Helminthocladiaceae

Liagora

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Family 4 Chaetangiaceae

ต.ย. Nemalion sp.

Scinaia sp.

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Page 52: Division Rhodophyta

มี gonimoblast filament ใน cystocarp

Young cystocarp

Gonimoblast filament

cystocarp

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Order 2 GelidialesFamily Gelidiaceae

Gelidium sp. มี gel strength สูง

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Page 55: Division Rhodophyta

Order 3 CryptonemialesFamily Corallinaceae

มี calcification (cortication) บน thallus

ต.ย. Corallina

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Page 56: Division Rhodophyta

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Page 57: Division Rhodophyta

Jania sp.

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AmphiroaSchool of Medical Science, University of Phayao

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Page 59: Division Rhodophyta

Order 4 GigartinalesFamily Gracilariaceae

Gracilaria verrucosa

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Page 60: Division Rhodophyta

Family HypneaceaeHypnea sp.

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Family GigartinaceaeChondrus crispus - Iris moss

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Gigartina sp.

มี cerrageenin สูง

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Page 63: Division Rhodophyta

Family SolieriaceaeEucheuma

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Page 64: Division Rhodophyta

Order RhodyminialesFamily 1 Champiaceae

Champia

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Page 65: Division Rhodophyta

Order Ceramialesมี cortication

Family 2 CeraminaceaeCeramium sp.

Centoceras

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Page 66: Division Rhodophyta

Family 3 DelesseriaceaeCaloglossa

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Family 4 RhodomelaceaePolysiphonia sp.

Main axis, Tetraspore

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Page 68: Division Rhodophyta

Laurencia sp.Tuberculate alternate branchlet

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Acanthophora sp.School of Medical Science, University of Phayao

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Division Division RhodophytaRhodophyta

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Batrachospermum gelatinosum Batrachospermum gelatinosum (Linnaeus) de Candolle(Linnaeus) de Candolle

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Page 72: Division Rhodophyta

Batrachospermum macrosporum MontagneBatrachospermum macrosporum Montagne

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Batrachospermum novaBatrachospermum nova--guineenseguineenseKumano et JohnstonKumano et Johnston

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Batrachospermum diatyches Entwisle Batrachospermum diatyches Entwisle

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Page 75: Division Rhodophyta

Batrachospermum mahalacenseBatrachospermum mahalacenseKumano et BowdenKumano et Bowden--KerbyKerby

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Page 76: Division Rhodophyta

Sirotodia sp.1Sirotodia sp.1

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Sirotodia sp.2Sirotodia sp.2

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Caloglossa beccarii (Zanardini) De ToniCaloglossa beccarii (Zanardini) De Toni

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Page 79: Division Rhodophyta

Bostrychia tenella (Lamouroux) J. AgardhBostrychia tenella (Lamouroux) J. Agardh

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Page 80: Division Rhodophyta

Nemalionopsis sp.Nemalionopsis sp.

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Thorea sp.Thorea sp.

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Compsopogon coeruleus Compsopogon coeruleus (Balbis ex. Agardh) Montagne(Balbis ex. Agardh) Montagne

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Page 83: Division Rhodophyta

Compsopogonopsis sp.Compsopogonopsis sp.

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Audouinella cylindrica Agardh

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